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Q: How do you find a perimeter of a circle?

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The circumference of a circle is the length of the circle's perimeter.

Circumference ("perimeter") of a circle = (pi) x (diameter of the circle)

When the shape is a circle, then the perimeter is called"circumference".The circumference IS the perimeter of a circle.

to find the perimeter of a circle you simply do this (pi x D )

If 'R' is the radius of the circle, then-- area of the circle is [ pi R2]-- perimeter of the circle is [ 2 pi R ]

-- Find the circumference of a full circle with a diameter of 12 mm.-- The perimeter of the semi-circle is(1/2 the circumference of the full circle) + (the diameter).

Its perimeter is half of its circumference plus its diameter

The perimeter or circumference of a circle = diameter times pi

The formula for the perimeter of a whole circle is 2 π r therefore the perimeter of a half circle will be (2 π r)/2 which is π r n.b. the perimeter of a circle is normally referred to as the circumference...

The equivalent of a "perimeter" in a circle is actually called its circumference. To get the diameter, just divide the circumference by pi.

Let r be the radius of the circle. Then the perimeter of the half circle is pi*r + 2r. That is half of the circumference plus the diameter.

Perimeter = pi*diameter = 113.1 cm

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