Question

I'm so confused about this question. I follow the formula exactly and it still says it's wrong. Can anyone explain how to do this?

Answer 1

Given info:

Radius - 7cm$A = 140\pi + 98\pi$

Height - 10cm

Formula - $A = 2\pi rh + 2\pi r^{2}$

r = radius

h = height

Therefore, the step-by-step work is:

$A = 2\pi (7)(10) + 2 \pi 7^{2}$

$A = 2\pi 70 + 2\pi 49$

$A = 140\pi + 98\pi$

$A = 238\pi$  :)