The area of a circle of radius 21 is 1386
The area of a circle can be calculated using the formula: A = Οr^2. If the diameter is 21ft, the radius would be half of that, which is 10.5ft. The area of the circle would be approximately 346 square feet.
A circle with a radius of 21 cm has an area of ~1,385.44 square cm
Area = pi*212
Using 3.14 as Pi the area of circle is: 1384.74
The area of a circle of radius 21 is 1386
The area of a circle can be calculated using the formula: A = Οr^2. If the diameter is 21ft, the radius would be half of that, which is 10.5ft. The area of the circle would be approximately 346 square feet.
A circle with a radius of 21 cm has an area of ~1,385.44 square cm
65.94 feet
A circle with a radius of 21 units has an area of 1,385.44 square units.
Area = pi*212
Using 3.14 as Pi the area of circle is: 1384.74
About 1385.44cm2
About 1385.44cm2
If the area is a circle and the radius of the circle is 21 miles, the distance around the circle (circumference) is 131.95 miles. The area of that circle is 1,385.4 square miles.
A circle with a radius of 21 yards has an area of 1,385.44 square yards.
The area is 441 times pi.