Q: What is the circumference of a 18 inch diameter?

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Circumference of a circle: 2*pi*radius or diameter*pi

If the radius is 18 feet - then the diameter is 36 feet. The circumference measurement is irrelevant !

(pie)(diameter)=(circumference) (pie)(9)(2)=18(pie)=56.549

circumference = pi*diameter so diameter = circumference/pi = 4.456 inches

31.4 in

Related questions

The circumference of a circle with an 18-inch diameter is about 56.55 inches. (C = d x Pi)

The formula for circumference is pi*d = circumference. Therefore just divide the circumference by pi to get diameter. Approx. answer = 5.73

Circumference of a circle: 2*pi*radius or diameter*pi

If the radius is 18 feet - then the diameter is 36 feet. The circumference measurement is irrelevant !

Circumference of circle: 18*pi = 56.549 inches rounded up to 3 decimal places

A basketball hoop is 18" in diameter and the formula for circumference is pi x 18" (3.1415 x 18"=56.54866")

(pie)(diameter)=(circumference) (pie)(9)(2)=18(pie)=56.549

The circumference of a 6 inch diameter circle is: 18.8 inches. (diameter x Pi = circumference)

The circumference of a six-inch diameter circle is: 18.8 inches.

The circumference of 9 inch diameter circle is about 28.27 inches.

The circumference of a circle with a 20.5 inch diameter is 64.4 inches.

The circumference of a circle with a 39 inch diameter is 122.52 inches.