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What is the equation of a circle centered at the origin with radius 20?

x2 + y2 = 400


What is the radius of a 20 ft circle?

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.


Which equation can be used to find the circumference of a circle with a radius that measures 10 feet?

Circumference = 2*Ï€*radius = 20*Ï€ feet


If the radius of a circle is 10 inches what is the diameter?

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.


What is the diameter of a circle whose radius is 10?

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


What is the radius of a circle with circumference of 20 pi?

The radius of this circle is 10 units.


What is the area of a circle with radius of 20 yards?

A circle with a radius of 20 yards has an area of 1,256.64 square yards.


What is the radius of a 20 diameter circle?

The radius is 3.183


What is the radius of a 20cm circle?

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)


What is the area of a circle with a radius of 20yd?

A circle with a radius of 20 yards has an area of 1,256.64 square yards.


What is the area of a circle you can surround with 20 feet of fence?

Radius of a circle with 20' circumference = 20'/2pi = 3.18'Area of a circle with 3.18' radius = ((3.18')^2)pi = 31.8 square feet


If the diameter of a circle is 20 centimeters what is the radius of the circle?

10 cm