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 131.88 mi.2 131.88 mi squared 65.94 mi.2 65.94 mi squared 1,384.74 mi.2 1,384.74 mi squared 346.19 mi.2
The formula to find the area of a circle is A = πr², where A is the area and r is the radius.
Given the diameter, we can find the radius by dividing it by 2. In this case, the radius (r) is 21 mi / 2 = 10.5 mi.
Now we can substitute the radius into the formula: A = 3.14 * (10.5 mi)².
Calculating this, we get: A ≈ 3.14 * 110.25 mi² ≈ 346.19 mi².
Therefore, the correct response is 346.19 mi.²