Area of a circle = pi*radius2 Area = pi*212 = 1385.44236 square units
A circle with a radius of 21 yards has an area of 1,385.44 square yards.
1,385.4 square cm
Area: pi*212 = 441*pi square units
Area = pi*42 = 50.265 feet to 3 d.p.
Area = pi*42 = 50.265 square meters to 3 d.p.
Area in square meters = pi*42
Area = 1/4*Pi*d21/4*3.14*42 = about 12.56cm2
50.2656 square inches The formula to find the area of a circle is ∏r2. Where ∏ is the mathematical constant and r is the radius of the circle. So 3.14 x 42. = 50.27 square cm or yds, (whatever the diameter was in).
The circumference of a 42-inch diameter circle is: ~131.95 inches.
The diameter of a circle with an area of 37.68 is 6.92
13.375