Question

Maria is building a circular pool. The radius of the pool will be 7 feet. She will put a cover on the pool and build a fence around the pool. How much material will she need to cover the top of the pool?​

Answer 1

about 154 square feet

Explanation:

The area of the pool is given by the formula for the area of a circle:

A = πr²

A = π(7 ft)² = 49π ft² ≈ 153.94 ft²

About 154 square feet of material will be needed to cover the top of the pool.

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Additional comment

The circumference of the pool is 2πr, or 14π feet -- about 44 feet.