Question

A chemical company is applying a layer of paint to the lids of cylindrical storage tanks, and needs to determine the area of the lids in order to buy the correct amount of paint. If the diameter of one cylinder lid is 2 feet, what is the area of the lid?

Answer 1

3.14 sq feet

Explanation:

Answer 2

π ft² ≈ 3.142 ft²

Explanation:

The end of a cylinder is a circle. The formula for the area of a circle is ...

A = πr²

where r is the radius of the circle. Since the radius is half the diameter, the lid has a radius of (1/2)(2 ft) = 1 ft, and the area is ...

A = π(1 ft)² = π ft² ≈ 3.142 ft²