Question

If the surface area of a sphere is 144π cm2, what is the diameter?

Answer 1

\[SA = 4 \pi r^2\]

r = d/2

Answer 2

So solve for r, then just multiply by 2, that's a pretty easy way.

Answer 3

is the diameter 12?

Answer 4

How did you get that?

Answer 5

1/2 √144 = 6

6 x 2 = 12

Answer 6

1/2?

Answer 7

Where did you get that

Answer 8

Somewhere on the internet, haha.

I had to look all of this up because my teacher never taught me any of this..

Answer 9

Do you know how to solve for r?

Answer 10

Nope

Answer 11

Have you not done algebra before?

Answer 12

I did algebra last year but i'm an idiot so half of whatever I learned I ended up forgetting..