Q: If music CD is 2.5 inches in radius what is circumference?

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Circumference of a circle = 2*pi*radius Circumference = 2*pi*25 =157.0796327 inches or 157 inches correct to three significant figures.

Circumference = 2*pi*r Circumference = 2*3.14*25 => 157 inches

The circumference of a circle if radius is 25 is about 157.1

Radius = Circumference/(2*pi) = 3.979 feet (approx)

Circumference = 2 * radius * pi So: 25(2) = 50 50 pi or about 157.1

Related questions

A circle with a circumference of 25 inches has a radius of about 3.979 inches.

If C = 25" then r = 3.979 inches

Circumference of a circle = 2*pi*radius Circumference = 2*pi*25 =157.0796327 inches or 157 inches correct to three significant figures.

Circumference = 2*pi*r Circumference = 2*3.14*25 => 157 inches

circumference=2*pi*r =2*(22/7)*0.25=1.57 inches

C = circumference, d = diameter, r = radius C = Pi * d 25 in. = 3.1415 * d d = 25 in./3.1415 d = 7.9577 in. r = d/2 r = 7.9577 in./2 r = 3.979 in. Therefore, a circle with a circumference of 25 inches has a radius of about 4 inches.

The circumference of a circle if radius is 25 is about 157.1

The circumference of a circle with a radius of 12.5 is 78.54 to two decimal places.

4 inches

The circumference of a circle when the radius is 25 feet equals about 157.08 feet.

72" radius = 452 25/64 " circumference

Radius = Circumference/(2*pi) = 3.979 feet (approx)