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# What is the circumference if the radius is 21 inches?

Updated: 12/12/2022

Wiki User

12y ago

131.95 inches, approx.

Wiki User

12y ago

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Q: What is the circumference if the radius is 21 inches?
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### What is the circumference of a circle with the radius of 21 inches?

A circle with a radius of 21 inches has a circumference of 131.95 inches.

### What is the radius of a circle with a 21 inch circumference?

the radius is 10.5 inches. * * * * * Wrong! Circumference = 2*pi*Radius Or, Radius = Circumference/(2*pi) So circumference = 21 inches implies radius = 3.34 inches (to 3 sf)

### How many inches is the circumference of a circle if its radius is 21 inches?

C = 131.95 inches.

### Is About how many inches is the circumference of a circle if its radius is 21 inches?

The circumference is about 131.9 inches. (C = r x 2 x Pi)

### If the radius is 8.5 inches then what is the circumference?

If the radius of a circle is 8.5 inches the circumference is: 53.4 inches

### If the circumference is 24 inches what is the radius?

If the circumference of a circle is 24 inches the radius is: 3.82 inches.

### What is the circumference of a circle with a radius of 72 inches?

A circle with a radius of 72 inches has a circumference of 452.39 inches.

### What is the circumference of a circle with the radius of 4.246 inches?

The circumference of a circle with a radius of 4.246 inches is about 26.68 inches.

### What is the circumference of the circle if the radius 10 inches?

The circumference of a circle with a radius of 10 inches is about 62.83 inches.

### What is a circumference of a circle with the radius of 9 inches?

A circle with a radius of 9 inches has a circumference of 56.55 inches.

### What is the circumference of a circle with a radius of six inches?

A circle with a radius of six inches has a circumference of 37.7 inches.

### What is the radius of a circle with a circumference 36 inches?

The radius of a circle with a circumference 36 inches is: 5.73 inches.