Question

Use the correct formula to find the area of a circle if the diameter is 21 mi. Round to the nearest hundredths place. Use 3.14 for π
.(1 point)
Responses

1,384.74 mi.2

1,384.74 mi squared

131.88 mi.2

131.88 mi squared

346.19 mi.2

346.19 mi squared

65.94 mi.2

Answer 1

Area = πr^2. With diameter 21 mi, r = 21/2 = 10.5 mi.

A = 3.14 × (10.5)^2 = 3.14 × 110.25 = 346.185 ≈ 346.19 mi².

Answer: 346.19 mi².