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 m. (1 point)
O 65.94 mi.?
O 1, 384.74 mi.?
O 131.88 mi.2
O 346.19 mi.2
The correct formula to find the area of a circle is A = πr^2, where r is the radius of the circle. Since the diameter is given as 21 mi, the radius would be half of the diameter, which is 10.5 mi.
Plugging in the values:
A = 3.14 * (10.5)^2
A = 3.14 * 110.25
A = 346.185
Rounded to the nearest hundredths place, the area of the circle is 346.19 mi^2.
Therefore, the correct answer is 346.19 mi^2.