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
1,384.74 mi.2 1,384.74 mi squared 131.88 mi.2 mi squared 65.94 mi.2 94 mi squared 19 mi.2
The correct formula to find the area of a circle is A = πr², where r is the radius of the circle. Since we are given the diameter (d = 21 mi), we first need to find the radius by dividing the diameter by 2: r = d/2 = 21 mi / 2 = 10.5 mi.
Now we can substitute the radius into the formula: A = 3.14 * (10.5)² = 3.14 * 110.25 = 346.185 mi²
Rounded to the nearest hundredths place, the area of the circle is 346.19 mi².