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 65.94 mi.2 65.94 mi squared 131.88 mi.2 131.88 mi squared 1,384.74 mi.2 1,384.74 mi squared 346.19 mi.2

Answer 1

To find the area of a circle, you use the formula A = πr², where A represents the area and r represents the radius.

Since the diameter is given (21 mi), you can find the radius by dividing the diameter by 2:

r = 21 mi / 2 = 10.5 mi

Now, you can substitute the value of r into the formula and calculate the area:

A = 3.14 * (10.5 mi)² = 3.14 * 110.25 mi² = 346.19 mi²

Therefore, the correct answer is 346.19 mi².