Answer:
Surface area = 70π cm²
Step-by-step explanation:
Surface area = πr² + πrl
Surface area = (π × 5 × 5) + (π × 5 × 9)
Surface area = (25π) + (45π)
Surface area = 70π cm²
I think that it is b. A rectangular prism with dimensions of 2 by 12
<span>2x+12+6x+1-x
You are adding up 2x and 6x and deduct 1x so you get 7x
You add up 12 and 1 which gives 13</span>