The area of a circle of radius 21 is 1386
21/(2*pi) = a radius of about 3.342253805 units
If the height is 9 and the volume is 21, then the radius = 0.8618
A circle with a radius of 21 inches has a circumference of 131.95 inches.
Circumference: 14*pi mi Area: 49*pi square mi
The perimeter of a cirlcle is its circumference which is: 2*pi*radius or diameter*pi
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.
The area of a circle of radius 21 is 1386
If radius=21 ft, then diameter = 2*radius = 42 ft
21/(2*pi) = a radius of about 3.342253805 units
If the height is 9 and the volume is 21, then the radius = 0.8618
A circle with a radius of 21 inches has a circumference of 131.95 inches.
area circle = π × radius² = π × (400 miles)² = 160000π sq mi ≈ 502655 sq mi
The volume of a sphere with a radius of 21 units is: 12,348 units 3
A circle with a radius of 21 meters has a circumference of 131.95 meters.
Circumference: 14*pi mi Area: 49*pi square mi
The radius is 3.34 units.