The area of a circle with a diameter of 72 feet is approximately which value?

The area of a circle with a diameter of 72 feet is approximately which value?

• A. 4030 sq ft
• B. 3900 sq ft
• C. 4071 sq ft
• D. 4200 sq ft

Answer: (C)

Start with the circle area formula. The diameter is 72 ft, so the radius is 72/2 = 36 ft. The area is A = πr^2 = π(36)^2 = 1296π ≈ 1296 × 3.1416 ≈ 4071.5 square feet. The value closest to this among the given options is 4071 sq ft, so that is the best approximate answer.

Start with the circle area formula. The diameter is 72 ft, so the radius is 72/2 = 36 ft. The area is A = πr^2 = π(36)^2 = 1296π ≈ 1296 × 3.1416 ≈ 4071.5 square feet. The value closest to this among the given options is 4071 sq ft, so that is the best approximate answer.