Question

Find the surface area of the figure. Help!

Answer 1

use the formula :
surface area (SA) = base area + up area + lateral area
SA = pi * R^2 + pi * r^2 + pi(R + r)s
with R = radius of base circle
r = radius of up circle
s = the length of aphotem

Answer 2

So 10 is the apothem?

Answer 3

according your diagram :
R = 1/2 * 12 = 6
r = 1/2 * 9 = 4.5
s = 10

now, apply that values to formula above

Answer 4

yes, aphotem (s) = 10

Answer 5

So is the answer 506.5818154

Answer 6

and actually, pi = 3.14

Answer 7

so i use 3.14 when i plug it in my calculator, not the pi button?

Answer 8

yes

Answer 9

So my answer is 506.325

Answer 10

Rounded to the nearest tenth it would be 506.3

Answer 11

tis good