The answer will depend on what is 20 inches: the radius or diameter or something else.
If the diameter of a circle is 20 inches, the circumference is about 62.83 inches. (C = d x Pi).
20 inches
62.8 inches.
Circumference = (pi) x (diameter) Diameter = Circumference/pi 62.8/pi = 19.98986 (rounded) which is awfully close to 20.
5*4 = 20 square inches
The circumference of a circle if its diameter is 20 inches is: 62.83 inches (diameter x Pi = circumference).
The circumference of the sphere is ~62.831 inches.
To find the radius of a circle with a circumference of 20 inches, you can use the formula for circumference: C = 2πr, where C is the circumference and r is the radius. Given that the circumference is 20 inches, you can plug this value into the formula: 20 = 2πr. Solving for r, you get r = 20 / (2π) ≈ 3.183 inches. Therefore, the radius of the circle is approximately 3.183 inches.
The circumference of a circle with a diameter of 20 inches is: 62.83 inches. (C = d x Pi)
If the diameter of a circle is 20 inches, the circumference is about 62.83 inches. (C = d x Pi).
20 inches
20/Pi = 6.37 inches
62.8 inches.
125.664 inches (rounded)
20=2pir. 20/2pi is 3.1831in. So diameter is about 6.3662 inches (rounded)
radius = 20/(2*pi) = 3.183098862 inches
The circle has a diameter of 6.366 inches.