Q: What is the circumference to r equals 12cm?

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Circumference = 2*pi*r = 12.566 cm (approx)

Something that goes around

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

circumference = 2*pi*6 = 37.699 inches to 3 decimal places

A circle has no "sides". The "perimeter" of a circle is usually referred to as the circle's "circumference", i.e. the distance around it. The circumference of a circle is [ 2 pi R ], where 'R' is the distance from the center of the circle to its curve. If the circumference of a circle is 12, then 12 = [ 2 pi R ]. R = [ 12 / 2 pi ] = [ 6/pi ]. The area of a circle is [ pi R2 ]. If R = 6/pi, then the area is [ pi R2 ] = [ pi x (6/pi)2 ] = [ pi x 36 / pi2 ] = ( 36/pi ) = 11.459 square centimeters (rounded).

Related questions

The circumference of a circle is C = 2Ï€r, where C is circumference, Ï€ is pi (3.14), and r is radius. C = 2 x 3.14 x 12cm = 75cm = 75/1 cm

The circumference of circle with radius 12cm is 75.4cm

The circumference of a circle if the diameter is 12cm is 37.7cm

75.3984

12cm = 12 cm

Circumference = 2*pi*r = 12.566 cm (approx)

C=2(pi)(r) therefore if r equals 3.20 then C=20.1061929

2(pi)r=2X3.14X3cm=18.85cm to four significant figures

12pi cm

Something that goes around

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

A circle has no "sides". The "perimeter" of a circle is usually referred to as the circle's "circumference", i.e. the distance around it. The circumference of a circle is [ 2 pi R ], where 'R' is the distance from the center of the circle to its curve. If the circumference of a circle is 12, then 12 = [ 2 pi R ]. R = [ 12 / 2 pi ] = [ 6/pi ]. The area of a circle is [ pi R2 ]. If R = 6/pi, then the area is [ pi R2 ] = [ pi x (6/pi)2 ] = [ pi x 36 / pi2 ] = ( 36/pi ) = 11.459 square centimeters (rounded).