If you are referring to a circle, divide the diameter by 2 (to get the radius), then use the standard equation for the area of a circle. For your reference, this is the equation:
area = pi x radius2
No. diameter = 2 x radius ⇒ radius = diameter ÷ 2 If the radius is 14 ft the diameter is 2 x 14 ft = 28 ft If the diameter is 7ft the radius is 7 ft ÷ 2 = 31/2 ft.
circumference = diameter × π → diameter = circumference ÷ π Circumference of tyre = distance/rotations = 1320 ft / 180 = 7 1/3 ft → diameter = 7 1/3 ft ÷ π ≈ 2.33 ft
Circumference of the circle = 7*pi feet
The discus used in men's competition is 220 millimeters (8.66 inches) in diameter. The discus used in women's competition is 181 millimeters (7.17 inches) in diameter.
less than 28
484/7 = 69 and one seventh ft
The volume of the pipe is 1,154.5 cubic feet.
Circumference = π*d = 7π = 21.99 ft
If radius=21 ft, then diameter = 2*radius = 42 ft
circumference = pi x diameter diameter = 10/3.14 ft which is near enough 3 ft 2¼ inches
Up to 4,318.26 US gallons of water.
The circumference of a circle with a diameter of 10 ft is: 31.42 feet (diameter x Pi = circumference).