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Q: What is the diameter of a circle whose radius is 20 ft?

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20; the diameter of a circle is twice its radius.

Radius = Diameter/2 so if diameter = 20 Radius = 20/2 = 10

40'

Double the value of the radius which in this case is 2*20 = 40 feet

The area of a circle is (pi) times (the radius)2. The radius of the given circle is 1/2 of the diameter = 20m. Area = (pi) times (20)2 = 400(pi) = 1,256.64 square meters(rounded)

Related questions

20; the diameter of a circle is twice its radius.

Radius = Diameter/2 so if diameter = 20 Radius = 20/2 = 10

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 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.

Diameter of the circle: 2 times 10 = 20 in

The radius of a circle whose circumference is 40pi is 20 units.

10 cm

20 cm

20 cm

The radius is half the diameter. The diameter is twice the radius. If the radius is 10 inches, the diameter is twice that, or 20 inches. The radius is any straight line that connects a point on the circle with it's center. The diameter is a line segment that connects two points on a cirle throught the center of the circle.Answer:Let r be the radius of the circle and d be the diameter of the circle. We know that the diameter = 2 * radius of the circle. Given the radius r = 10 inches. Diameter d = 2 * 10 Diameter = 20 inches.

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