Question

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HELP WORK IT OUT.

What is the ratio of the surface area of a sphere with radius 2 ft to the surface area of a sphere with radius 5 ft?

Answer 1

what is the formula for surface area of a sphere?

Answer 2

@Cal3blikespie

Answer 3

A = 4 * π * r^2

Answer 4

good so,

\[\frac{ 4*\pi * 2^{2} }{ 4*\pi * 5^{2} }\]

Answer 5

The 4 and pi cancel out

Answer 6

We have 2^2/5^2
4/25

Answer 7

0.16?

Answer 8

im confused

Answer 9

4/25 is 0.16

Answer 10

yes

Answer 11

and so is 2^2/5^2

Answer 12

so now what?

Answer 13

is the ratio 2 to 5?

Answer 14

4 to 25

Answer 15

how did you get that?

Answer 16

We have 2^2/5^2
4/25

Answer 17

I solved it see from the begining

Answer 18

4∗π∗224∗π∗52

Answer 19

ugh. you said the four and pi cancel out

Answer 20

Yes

Answer 21

OMG

Answer 22

i understand how you got 5^2 and 2^2

Answer 23

but where did the 4/25 come from?

Answer 24

So?

Answer 25

2^2 is 4
5^2 is 25
So,
4/25

Answer 26

= 4:25

Answer 27

oooooooh. ok i get it

Answer 28

so when the ratio would be 4 to 25

Answer 29

then

Answer 30

yes.

Answer 31

thanks :)

Answer 32

Welcome