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 65.94 mi.2 65.94 mi squared 346.19 mi.2 346.19 mi squared 1,384.74 mi.2 1,384.74 mi squared 131.88 mi.2
Correct Formula: A = πr^2 (Area = π * (d/2)^2)
Given diameter = 21 mi, radius (r) = 21/2 = 10.5 mi
Substitute values into the formula: A = 3.14 * (10.5)^2
A = 3.14 * 110.25
A = 346.185
Rounded to the nearest hundredths place: 346.19 mi²
Therefore, the correct answer is:
346.19 mi.²