40'
20; the diameter of a circle is twice its radius.
The area of a circle is computed by the formula A = pi * r2 (r is the radius of the circle)For a 20 foot circle, the radius is 10 feet and the area is 314.16 square feet.
Double the value of the radius which in this case is 2*20 = 40 feet
Circumference of a circle = 2*pi*radius or pi*diameter Area of a circle = pi*radius squared
20 feet (just double it!) The radius is from the centre of the circle to the edge and the diameter is from the edge to the opposite edge! :)
40'
20; the diameter of a circle is twice its radius.
The area of a circle is computed by the formula A = pi * r2 (r is the radius of the circle)For a 20 foot circle, the radius is 10 feet and the area is 314.16 square feet.
circumference of a circle = pi*diameter or 2*pi*radius cicumference = 62.83185307 or 63 feet to the nearest foot
Double the value of the radius which in this case is 2*20 = 40 feet
Circumference of a circle = 2*pi*radius or pi*diameter Area of a circle = pi*radius squared
The radius is 3.183
That depends what you mean with "a 20 cm. circle". If 20 cm. is the radius, you already have the answer. If 20 cm. is the diameter, the radius is half the diameter. (10cm)
The radius of a circle is the distance from the center of the circle to any point on its circumference. In this case, if the circle has a diameter of 20 feet, the radius would be half of that, which is 10 feet. So, the radius of a 20 ft circle is 10 feet.
The radius is 1/2 of the diameter, so if the radius is 20 units then the diameter is 40 units. You multiply the radius by 2 to get the diameter.
20 mm. The diameter is always twice the radius.