The correct formula to find the area of a circle is A = πr^2, where r is the radius of the circle.
Given that the diameter of the circle is 21 mi, we can find the radius by dividing the diameter by 2.
radius = diameter/2 = 21 mi/2 = 10.5 mi
Now, we can substitute the value of the radius into the formula to calculate the area:
A = 3.14 * (10.5 mi)^2 = 3.14 * 110.25 mi^2 = 346.185 mi^2
Rounding to the nearest hundredths place, the area of the circle is approximately 346.19 mi^2.
Therefore, the correct answer is 346.19 mi.2.
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
131.88 mi.2
346.19 mi.2
65.94 mi.2
1 answer
1 answer