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)
First, we need to find the radius of the circle by dividing the diameter by 2:
Radius = Diameter / 2
Radius = 21 / 2
Radius = 10.5 mi
Now, we can use the formula for finding the area of a circle:
Area = π * Radius^2
Area = 3.14 * 10.5^2
Area = 3.14 * 110.25
Area = 346.185
Rounded to the nearest hundredths place, the area of the circle is 346.19 square miles.