What is the diameter If the circumference is 20 inches?

What is the diameter If the circumference is 20 inches?

What is the diameter of a circle with a circumference of 20 pi? Answer: 10 The radius is half the diameter, so r = d/2 = 20/2 = 10.

How do you find the circumference of a 20 inch circle?

So 20 x 20 (radius squared) times pi is 1256. Circumference of a circle is diameter times pi. So 40 (2 radii means one diameter) times pi is 125.6 inches. Hope I helped.

What is the diameter of a 30 circumference?

94.25 centimeters
Answer: The circumference of a circle with a diameter of 30 centimeters would be 94.25 centimeters. The diameter of a circle is given by joining any two points on the circle such that the line passes through the center. In other words, the diameter of a circle is twice its radius i.e., 2r.

What is the circumference of a tire with a diameter of 12 inches?

To find the area of a circle, you need to use the formula A=π⋅r2 ; therefore the area A is π⋅62≈113 square inches. To find the circumference of a circle, you will use the formula C=2⋅π⋅r ; therefore the circumference C is 2⋅π⋅6≈38 inches.

How do I measure a diameter?

Determine the diameter from the circumference by dividing the circumference by the value of pi, which is 3.141592. Pi is the ratio between the circumference and the diameter and when it is divided into the circumference the result is the diameter.

How do you calculate circumference using diameter?

To calculate circumference (C) from a circle’s diameter, multiply the diameter by π, or C = πd. To calculate circumference from a circle’s radius, multiply the radius by 2, and then multiply the result by π, or C = 2rπ.

How do you find the diameter if you have the circumference?

If you know the radius of the circle, multiply it by 2 to find the diameter. If the radius of a circle is 2.47 cm, the diameter is 2.47 cm * 2, which equals 4.94 cm. If you know the circumference of a circle you can divide it by pi (3.14) to get the diameter (circumference = pi * diameter).

What is the formula for finding circumference?

The circumference of a circle is calculated using the formula: 2 x π x radius, where π is a mathematical constant, equal to about 3.14159.

What is circumference divided by diameter?

By definition, pi is the ratio of the circumference of a circle to its diameter. In other words, pi equals the circumference divided by the diameter (π = c/d). Conversely, the circumference of a circle is equal to pi times the diameter (c = πd).