8. A welder is making a metal sphere. The radius will be 115 cm. What is the surface area of the metal​ sphere? Use 3.14 for π.
9. Thirty percent of the metal sphere will be covered in a metal that is tinted red. What is the area of the section of the sphere that is tinted​ red?

please help :))

Answers

Answer 1

Step-by-step explanation:

Given that,

8. The radius of a sphere, r = 115 cm

We need to find the surface area of the metal​ sphere. The formula for the surface area of a sphere is given by :

[tex]A=4\pi r^2[/tex]

Put all the values,

[tex]A=4\times 3.14 \times (115)^2\\\\=166106\ cm^2[/tex]

9. Thirty percent of the metal sphere will be covered in a metal that is tinted red.

So, the area of the section that is tinted red is :

[tex]A=30\%\ of\ 166106\\\\=\dfrac{30}{100}\times 166106\\\\=49831.8\ cm^2[/tex]

Hence, this is the required solution.


Related Questions

pls answer I'll mark brainliest the question is in the picture also please explain how you solved​

Answers

Answer:

D) 36π[tex]a^6b^9[/tex]

Step-by-step explanation:

Volume of a sphere:

V = 4/3πr³

Given:

r = 3a²b³

Work:

V = 4/3πr³

V = 4/3π(3a²b³)³

V = 4/3π(27[tex]a^6b^9[/tex])

V = 36π[tex]a^6b^9[/tex]

Please help me with these two, they are hard​

Answers

what are you finding?

How do I simplify this?

Answers

Step-by-step explanation:

The given question is wrong, so first of all we have correct this one.

The answer is given in picture, u can look.

I think this one is help u

hello please help thanks

Answers

Answer:

the last one: wind

Which is an example of a statistical question?

Questions
Question 1 How many pets does Alisha have at home?
Question 2 How old were you when you got your first pet?
Question 3 Do you like having a pet?
Question 4 What is Alisha’s pet’s name?

Answers

Answer:

3??

Step-by-step explanation:

im trying, sorry if its wrong :(

Answer:

its a

Step-by-step explanation:

im positive

What goes in the missing spaces? Help me plz

Answers

Answer:

6 | 3

30 | 15

40 | 20

56 | 28

Step-by-step explanation:

You need to find out how many spring rolls will feed a single person

[tex]\frac{6}{3}=2[/tex]

then use this to multiply by two if you want number of rolls, or divide by two if you want to get number of people that can be fed.

i need 3, 4, 5 pretty peaseeeee

Answers

Answer:

2. 7/4

3. D

4. -25/77

5. -3

Step-by-step explanation:

Write -2 3/11 as an improper fraction

Answers

Answer:

-25/11

Step-by-step explanation:

11 x -2 + 3 = -25

I have reposted this question 2 times. Help! Brainliest is promised!

Answers

Answer:

the vertex is (-1.-2) y-intercept is (0,-1) that can be another point in the parabola. Hope this helped.

Step-by-step explanation:

Answer:

steps below

Step-by-step explanation:

g(x) = (x+1)² - 2 is translation of f(x) = x² to the left 1 unit and down 2 units

vertex of f(x): (0 , 0)

vertex of g(x): (-1 , -2)

Jenny is throwing a surprise birthday party for her best friend Katie. She has decided to make Katie’s favorite dish, meat loaf. There will be a total of 40 people at the party. Answer the following questions:
• The recipe says it serves 8 people. By what number should Jenny multiply each ingredient to make enough meat loaf for everyone? 5
• The recipe calls for 1 1/2 lbs. of ground beef. How much ground beef will Jenny need to make enough meat loaf for everyone?
• Jenny will be serving milk with the meal. She plans on using 8 oz. glasses. How many gallons of milk does she need to make sure everyone gets one glass of milk?

Answers

Answer:

The answer is below

Step-by-step explanation:

a) The recipe for the meat loaf used by Jenny can serve a total of 8 people. Since there are 40 people in total to serve, the number of each ingredient needed is:

Number of each ingredient = total number of people / number of people served by one recipe

Number of each ingredient = 40 / 8 = 5

b) Since each recipe contains 1 1/2 lb (1.5 lbs) of ground beef, the total amount of ground beef needed to feed everyone is:

Total amount of ground beef = 1.5 lbs * 5 = 7.5 lbs

c) Since one serving would require 8 oz of milk. To serve everyone, the amount of milk needed is:

Amount of milk = 40 people * 8 oz = 320 oz

128 oz = 1 gallon

Amount of milk = 320 oz * 1 gallon / 128 oz = 2.5 gallon

The quantity of the recipe needed for a given number of people is found

by a multiple of the recipe for 8 people.

First question: The number with which to multiply the ingredient is 5.Second question: The amount of ground beef needed is 7.5 lbs.Third question: The number of gallons of milk needed is 2 gallons.

Reasons:

The total number of people at the party = 40 people

The number of people the recipe serves = 8 people/recipe

First question:

The number Jenny should multiply the ingredient to make enough for everyone is [tex]\mathbf{\dfrac{40 \ people}{8 \, people \, per \, recipe}} = 5 \times Recipe[/tex]

Therefore;

To make enough meat loaf for everyone, Jenny should multiply each ingredient by 5.

Second question:

The amount of ground beef required = [tex]1\frac{1}{2}[/tex] lbs.

Amount of ground beef required for everyone = 5 × [tex]\mathbf{1\frac{1}{2}}[/tex] lbs = 7.5 lbs.

Third question:

The volume of each glass of milk Jenny is serving = 8 oz.

The number of glasses of milk Jenny need = 40 glasses

The volume of the 40 glasses = 40 × 8 oz. = 320 oz.

Volume of one gallon (imperial) = 160 fluid ounce = 160 oz.

Therefore;

320 oz = 2 × 160 oz. = 2 × 1 gallon = 2 gallons

The number of gallons of milk Jenny needs to make sure everyone gets

one glass of milk is 2 gallons of milk.

Learn more here:

https://brainly.com/question/16154116

How far will a runner traveling at 10.6 m/s move in fifteen seconds?

Answers

Answer: 159 miles because 10.6 times 15 = 159

Hope it helps.

which is the midpoint of the segment that joins (3, 6) and (5, -2)?​

Answers

Answer:

(4,2), I think

Step-by-step explanation:

Use the midpoint formula for this question (x1+x2/2, y1+y2/2). In this case, x1 would be 3 and x2 would be 5. 3+5=8, and 8/2 is 4. Similarly, y1 would be 6 and y2 would be -2. 6+(-2)=4, and 4/2= 2. So, the midpoint would be (4,2)

Here we want to find the midpoint of a segment that joins (3, 6) and (5, -2).

The midpoint is: (4, 2)

For two general points (x₁, y₁) and (x₂, y₂) the midpoint of the segment that joins these two points is:

[tex](\frac{x_1 + x_2}{2} , \frac{y_1 + y_2}{2} )[/tex]

Here we have the points (3, 6) and (5, -2), using the above formula we get:

[tex](\frac{3 + 5}{2} , \frac{6 + (-2)}{2} ) = (\frac{8}{2} , \frac{4}{2} ) = (4, 2)[/tex]

Concluding, the midpoint of the segment that joins (3, 6) and (5, -2) is (4, 2)

If you want to learn more, you can read:

https://brainly.com/question/17506315

when using substitution to solve this system of equations, what is the result of the first step?

Answers

The first choice is your answer. Since it’s substitution, you have to plug in x to the x in the bottom equation

Which measurement is equivalent to 1 meter?

100 kilometers

100 centimeters

1,000 centimeters

1,000 kilometers

Answers

Answer:

100 centimeters

Step-by-step explanation:

Answer:

100 cm

Step-by-step explanation:

1 km = 1000 m

1 m = 100 cm

Answer: 100 cm

Please help me I need this right now like righttttt nowwwww

Answers

Answer:

B. is the answer

hope this helps

have a good day

Step-by-step explanation:

The answer is y = 3x + 8, therefore it is B. Have a nice day.

What is the coefficient in this expression?
2X-8
a
2
b
х
C
001
d

Answers

I'm no expert but I've done this before I'm pretty sure its D. 2

i seriously cannot standddd those ppl who say "PLLEEEASSSSSSEEEEE HELLPPPPPP MEEEEE IT'S DUE IN 2 MINUTES"
and i'm over here looking like...but whose fault is it that it's due in 2 minutes, and you can't figure it out it's like if you paid better attention to your teacher you'd be able to answer it i'm sure and dontttttt get me STARTED on those kids who use this like a dating website...it's like COME ON DUM-DUM how in the WORLDDDDD do you know that your "bf/gf" is ACTUALLY A CHILD OR THAT WHOEVER THEY CLAIM TO BE IS ACTUALLY THEM like OML some of y'all just have no common sense sheesh ‍♀️ but since this is an "academic website" i'll ask a question what is ∛-189

Answers

answer:

yeah or the people whose questions are literally nothing but a g00gle search away it's like you do know that you're practically wasting your points right? lol

have a nice day!

may i have the brainliest pls (i'm trying to become a genius)

answer to your math question-

-3[tex]\sqrt[3]{7}[/tex]

**the steps are in the picture**

There are 78 calories in 3 ounces of frozen yogurt. How many calories are in 8 ounces of frozen yogurt?

Answers

Answer: 208 calories.

Step-by-step explanation:

To find the answer, first find out the number of calories in one ounce of frozen yogurt:

= 78 / 3

= 26 calories

One ounce of frozen yogurt contains 26 calories.

If there are 8 ounces therefore, the number of calories would be:

= Yogurt * calories per yogurt ounce

= 8 * 26

= 208 calories.

Pete's back yard is 21 yards long by 48 feet wide. what is the area of Pete's back yard​

Answers

Answer:

1,008 square yards

Step-by-step explanation:

21 yards long X 48 feet wide = 1,008 square yards

hope it helps!

helllpppp i have a timed test​

Answers

Answer:

X = 0, 5 1/2

Step-by-step explanation:

I can’t see what’s befor the 1

help!!!

Calculate tan(4π3).

No links !!
No spams!!

Answers

Answer:

4 pie 3 so 4 times pie times 3

Step-by-step explanation:

Suppose you own 100 shares of stock. It pays $1 per share in dividend. How much will you

receive every quarter?

Answers

Answer: $25

Step-by-step explanation:

You own 100 shares of the stock and it pays $1 per share as dividend.

Amount of dividends you receive will therefore be:

= 100 * 1

= $100

Dividends are however, quoted on a yearly basis. The quarterly dividend received would be:

= 100 / 4 quarters

= $25

(no files!!)Write an equation that can be used to find the nth term of the sequence, an. 80, 105, 130, 155, 180, ... Enter your answer by filling in the boxes. an =__n +__

Answers

Answer:

The equation is

an=25n+55

HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP

Answers

Answer:

it is the first one

Step-by-step explanation:

if right give brainliest

Simplity each expression using the distributive property.

1. 6(3x -4)

Answers

18x-24 just multiply the 6 *3x=18x and then the 6* -4=24
Answer:

18x-24

Explanation:

First you multiply 6 and 3 to get 18 then you do 6 times -4 which is -24. So therefore your answer would be 18x-24. I hope this helps!

Which of the following shows the sample space for spinning the spinner one time?

Answers

Answer:

There are two colors and 8 numbers.

One color is represented by 3 numbers 2, 3, 7

The second color is represented by 5 numbers 1, 4, 5, 6, 8

P(color 1) = 3/8P(color 2) = 5/8

answers are
126in cubed
377in cubed
565in cubed
1131in cubed

Answers

126

Step-by-step explanation:

hdhfgdhdgdhdhrgdgdgdhdgdhdhdh

Food provides not only energy but also other important nutrients such as (3)?

Answers

Answer:

Step-by-step explanation:

Nutrients also provide building blocks for repair, growth, and regulates substance that effect chemical processes

Claire wants to start a stamp collection. She spends $15 on an album to hold her stamps and $1.25 for each stamp. If she has $40, what is the maximum number of stamps she can buy?

Answers

Answer:

20

Step-by-step explanation:

40 - 15 = 25

25/1.25=20

what is the square root of 3.14159283886535

Answers

Answer:

1.772453851 is the square root

Step-by-step explanation:

hope it helps

Answer:

1.77245390317

Step-by-step explanation:

Hope this helped!!!!

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