A circular pool with a diameter of 18 ft will have a uniform 4 ft concrete walkway poured around it. If the concrete cost 4.25 a square foot how much will it cost for the concrete?

Answer 1

First, calculate the total diameter of the pool plus the walkway, which is 18 ft + 8 ft (4 ft on each side) = 26 ft. The area of the larger circle (pool plus walkway) is π * (13 ft)², and the area of the pool alone is π * (9 ft)². The area of the walkway is the difference between these two areas. Calculating the areas gives approximately 530.14 sq ft for the larger circle and 254.47 sq ft for the pool, resulting in about 275.67 sq ft for the walkway. At $4.25 per square foot, the cost for the concrete will be approximately $1,171.43.