Mathematics High School

Find the circumference and the area of a circle with radius 4 cm

Please help!

Find The Circumference And The Area Of A Circle With Radius 4 Cm Please Help!

Answers

Answer 1
Circumference: 2 * pi * r
pi = 3.14, r = 4
2 * 3.14 * 4 = 25.12
Circumference: 25.12 cm

Area = pi * r^2
pi = 3.14, r = 4
3.14 * 4^2 = 50.24
Area: 50.24 cm^2
Answer 2

Answer:

Circumference: 8πcm

Area: 16πcm²

Step-by-step explanation:

Circumference:

To find the circumference of a circle, use the formula c = 2πr, where r is the radius. Use 3.14 for pi.

r = 4

c = 2πr

c = 2(3.14)r

c = 2(3.14)4

c = 25.12cm

Area: To find the area of a circle, use the formula πr², where r is the radius. Use 3.14 for pi.

r = 4

a =  πr²

a = (3.14)r²

a =  (3.14)4²

a =  (3.14)16cm²

a = 50.24 cm²

Related Questions

Eric is solving the equation x2-5x + 6 = 0 using the steps below. Step 1: x²–5x = -6 Step 2: x2-5x + 25 = -6+25 Step 3: (x - 5)2 = 19 Step 4: X-5 = 119 Eric finds out that his final answer is incorrect. During which step did Eric make his initial error? Step 1 Step 2 Step 3 Step 4
help please​ I'll give you brainliest ;)

Answers

Answer:

Step-by-step explanation:

Step 2.

He added 25 as he was trying to complete the square. He should have added (-5/2)^2 to both sides.

Rule: you take the coefficient of the middle term, divide it by 2 and square the result. You are always going to get a positive result. Add this result to both sides.

20 points if you can solve all

Answers

Answer:

5 13 2 11 7 4 3 14 10175

Step-by-step explanation:

|6| = 6 means “the absolute value of 6 is 6.”|–6| = 6 means “the absolute value of –6 is 6.”

Brainlist Pls!

Lydia rode the school bus for a total of 29 miles each day. How many miles did she ride the school bus over 180 days?​

Answers

Answer:

5220 miles

Step-by-step explanation:

29x180

Answer:

5220 miles

Step-by-step explanation:

Multiply the number of days she rode by how many miles she rode each day

29*180 = 5220

I need help with this problem​

Answers

Answer:

Sorry i really need points you can report me but i just want you to knw that I REALLY need points

In the equation y = -x + 7 what is the value of m

Answers

m=slope
y=mx+b
m=-1
I am adding more text to be able to submit this

It’s not a or c help

Answers

Answer:

D if i'm wrong i'm so sorry

Step-by-step explanation:

it is b i worked it out and got b

Pls help on question 9

Answers

12 are 27 1/4 and under and 8 are above 27 1/4

Which set of ordered pairs would define a line with a negative slope?
o A. (2, 3) and (-4, -1)
O B. (2, 3) and (7,6)
OC. (3,6) and (5, 1)
OD. (5, 5) and (0, 1)

Answers

A because it is going from a higher point to a lower point as the line moves forward.

HELP, EXTRA POINTS AND BRAINIEST UMM DONT GUESS AND "NO NO NOOO LINKS" ty

Answers

Answer:

236.3 feet squared.

Step-by-step explanation:

Base Surface Area =  8 squared

=  64 feet squared

Lateral Surface Area =  

2×8× √  

( 8 )2 + 102

2

=  172.3 feet sqaured

Total Surface Area = 236.3 feet squared

Please brainliest! I worked so hard!

HELP!!! answer quickly pls

Answers

Answer:

it was dilated by 1/2 so:

choice 3) (x,y) -> (0.5x, 0.5y)

Step-by-step explanation:

Answer:

It's C (x,y) --> (0.5x, 0.5y)

Step-by-step explanation:

ABCD are the original and A'B'C'D" is the dilation

Point A is (4,10) and Point A' is (2,5) so the dilation is .5

Help me plz ASAP
A.2
B.1/2
C.2/3
D.3/2

Answers

A

Step-by-step explanation:

First and foremost, we can rule out B and C because they are less than one and would make the hexagon smaller instead of bigger. Now, when we measure the units, we see that it goes up by 2 squares on the graph. So, by process of elimination and measurement, we get the answer of A.

PLS HELP ME IM FREAKING OUT

Answers

Answer:

175mm^3 is the volume.

is 9cm > 4cm correct​

Answers

Answer:

nooooooooooooooooooooo

x = 4 and y = 3.
3x 2 + 5y
A. 27
B. 31
C. 63
D. 159

Answers

Answer:

39

Step-by-step explanation:

I did the math

Please help fast how to find missing numbers

Answers

 Answer:                    

Step-by-step explanation:

Which statement about the quadratic equation below is true?
3x^2-27=0

Answers

Answer:

C

Step-by-step explanation:

3x^2 - 27 = 0;    add 27 to both sides

3x^2 = 27;         divide both sides by 3

x^2 = 9

And the solutions to x^2 = 9 are 3 and -3

What is the area of this polygon?

40 cm2
18 cm2
16 cm2
24 cm2

Answers

Answer:

40 cm 2 yes to Chou god cm,6 ja

Answer:

40 cm2

Step-by-step explanation:

I took the test

Kimberly is a hostess at a restaurant a large party had a bill for 781.50 the restaurant adds a tip of 18% to the bill. Kimberly receives 8% of the tip and each server receives 1/5 of the remaining tip how much does each Sever earn

Answers

Answer:

$28.13

Step-by-step explanation:

B)

The sum of the ages of two brothers is 31years and the difference of their ages is 5 years.find their present ages.​

Answers

Answer:

13 years

18 years

Step-by-step explanation:

Let the age of the two brothers be x and y years.

According to the first condition:

x + y = 31.....(1)

According to the first condition:

x - y = 5.....(2)

Adding equations (1) & (2)

x + y = 31

x - y = 5

_______

2x = 36

x =36/2

x = 18 years

Plug x = 18 in equation (1)

18 + y = 31

y = 31 - 18

y = 13 years

Verification:

13 + 18 = 31

18 - 13 = 5

the teacher has 2 gallons of clay each child needs a gallon to make an animal how many children can make a clay animal

Answers

Answer:

2 children

Step-by-step explanation:

2 gallons

1 gallon per child

2/1 = 2 children

write the statement for him a f(n).​

Answers

Answer:

180f + 23(n)

Step-by-step explanation:

just make an equation

Cassandra bought a tablecloth. The area of the tablecloth is 120 ft2. The width of the tablecloth is 10 feet. How long is it?

Answers

12. the answer is 12

the answer is 12 hope this helps!!

answer ASAPPPPPPPPPP

Answers

Answer:

Step-by-step explanation:

-5(z + 1) = -2z + 10           Remove the brackets

-5z - 5 = - 2z + 10            Subtract 10 from both sides

   - 10           - 10

-5z - 15 = -2z                   Add 5z to both sides

+5z          +5z

    -15  = 3z                     Divide by 3

z = - 5

Who ever answers first gets brainliest

Answers

Answer:

I answered :)

Step-by-step explanation:

DONT GET MAD, YOU SAID WHOEVER ANSWER FIRST GETS BRAINLIEST

Answer is A

Answer:

A

Step-by-step explanation:

Help!!! ( look at picture)

Answers

Answer:

B

Step-by-step explanation:

The information on the graph is almost symmetrical, because the lines look almost the same length on both sides.

Answer and Step-by-step explanation:

The answer is B. The distribution is approximately symmetrical.

Although on either side of the middle (where the most dots are on 22), it isn't skewed more towards one side or the other, it is fairly symmetrical.

#teamtrees #PAW (Plant And Water)

Lisa, Juan and isaac equally shared 1/2 of a cake which fraction of the whole cake did each of them recieve

Answers

Answer:

Each will receive [tex]\frac{1}{6}th[/tex] of the cake.

Step-by-step explanation:

Let the amount of cake = c

Lisa, Juan and Isaac are the persons who are sharing half of a cake equally.

Number of persons = 3

Part of the cake shared = [tex]\frac{c}{2}[/tex]

Fraction of the cake shared by each = [tex]\frac{\text{Amount of cake shared}}{\text{Number of persons who shared}}[/tex]

                                                             = [tex]\frac{\frac{1}{2}c}{3}[/tex]

                                                             = [tex]\frac{1}{6}c[/tex]

Therefore, fraction of total cake shared by each member will be [tex]\frac{1}{6}[/tex] of the total amount of cake.

multiply 8 and 4 then add 7 to the product
please help i will give brainliest answer

Answers

Answer:

I don't know sorryyyyy plz give the other brain

PLEASE HELP ASAP
A. 300 ft2
B.150 ft2
C.45 ft2
D.75 ft2

Answers

Answer:

75 ft^2

Step-by-step explanation:

Area of trapezoid = 1/2({b1+b}*h)

1/2(25x6) =

150 / 2 =75

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

D

Step-by-step explanation:

Hope this helps! Have a great day!

94% of salmon pass through a single dam unharmed. By what percent does the number of salmon decrease when passing through a single dam?

Answers

Answer:

6%

Step-by-step explanation:

Answer:

They decrease by 6%

Step-by-step explanation:

100%-94%=6%

37 POINTSSS!!!!! Plzzz help

Write a quadratic function whose graph has a vertex of (3, 2) and passes through the point (4,7).

Answers

Answer:

y = 5(x -3)2* +2

Step-by-step explanation:

Trust me bro I did it before

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