Find the surface area of the composite solid. leave your answer in terms of pi a 200 pi cm2 b 205 pi cm2 c 210 pi cm2 d 225 pi cm2

We can separate this solid into two pieces: a cylinder and a cone. I will be finding the surface area's separately, then adding them together in the end.

Cylinder: The formula for the surface area of a cylinder is 2πrh+2πr². HOWEVER, since the cone and cylinder are connected, they don't count as part of the surface area, we don't need the 2 in 2πr². The radius, or r, is 5 cm. The height, or h, is 12 cm. Then, we use those numbers and plug it in the formula.

2πrh+πr²

2π(5)(12)+π(5)²

120π+25π

145π cm²

its 69.420

step-by-step explanation:

i can't solve unless i know what the line is

step-by-step explanation:

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