Question

A cylinder is to be painted. What is the area of the surface to be painted if the diameter is 20 feet and the height is 30 feet? Round to the nearest whole number.

Answer 1

Answer:

2513.27412 (using pi not 3.14)

Step-by-step explanation:

So, we are looking for surface area!

The formula is 2*π*r*h + 2 *π *d

Since d = 20, we know r = 10.

Let's solve!

2π rh+ 2π r2 = 2· π· 10· 30 + 2 · π· 102≈ 2513.27412