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
1,384.74 mi.2
1,384.74 mi squared
65.94 mi.2
65.94 mi squared
346.19 mi.2
346.19 mi squared
131.88 mi.2
The correct formula to find the area of a circle is A = π * r^2, where A is the area and r is the radius.
Given that the diameter is 21 mi, we can find the radius by dividing the diameter by 2: r = 21 mi / 2 = 10.5 mi.
Now, we can plug in the values into the formula: A = 3.14 * (10.5 mi)^2 = 3.14 * 110.25 mi^2 = 346.185 mi^2.
Rounding to the nearest hundredths place gives us 346.19 mi^2.
Therefore, the correct answer is 346.19 mi squared.