Question

what is the surface area of a sphere that has a diameter of 20 cm?

Answer 1

Surface Area of a Sphere = 4 pi r^2
SA = 4 * pi* 10^2

SA = ? @spaghettigoo123

Answer 2

1256?

Answer 3

if you are using 3.14 for pi, you are correct

Answer 4

that's what I did

Answer 5

ok thought so, you got it correct

Answer 6

is that all I do?

Answer 7

yep, plug in r = 10 (diameter = 20 ---> radius = 10) and evaluate

Answer 8

oh I see

Answer 9

thanks guys!

Answer 10

yw