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Suppose the radius of the circle is r units.

Then perimeter of a whole circle = 2*pi*r.

So perimeter of curved part (arc) of a quarter circle = 2*pi*r / 4 = pi*r/2

Also, the quadrant has a radius on either end of the curved part. Their combined length is 2*r

So the total perimeter = 2r + pi*r/2 = r(2 + pi/4)

Q: What is the formula of the perimeter in the quarter of the circle?

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The perimeter of a circle has the formula 2πr. Therefore the length of a semi circle is πr. But the perimeter of a semi circle also includes the diameter which is 2r. Therefore the perimeter of a semi circle = πr + 2r = r(π + 2)

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

There is no specific formula for a sector of a circle. There is a formula for its angle (at the centre), its perimeter, its area.

The formula for the circumference of a circle is pi * diameter or (2 radius.)

The perimeter is equal to Pi times the diameter.

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The arc is one quarter of a circle so is 2pir, the other components of the quarter circle are the two radii, so perimeter is 2r+2pir = 2r(1+pi)

The perimeter of a circle has the formula 2πr. Therefore the length of a semi circle is πr. But the perimeter of a semi circle also includes the diameter which is 2r. Therefore the perimeter of a semi circle = πr + 2r = r(π + 2)

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

I believe 270 because a circle's perimeter is 360 so if you divide it by 0.75, you get 270.

There is no specific formula for a sector of a circle. There is a formula for its angle (at the centre), its perimeter, its area.

The formula for the circumference of a circle is pi * diameter or (2 radius.)

The perimeter is equal to Pi times the diameter.

There are different formula for: Height, Area, Perimeter, Angle, Length of Median Radius of inscribed circle Perimeter of inscribed circle Area of inscribed circle etc.

The answer will depend on what the formula is for: the perimeter or area of the segment.

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...

Circumference or perimeter = 2*pi*radius or pi*diameter

The perimater of a circle is the same as the circumference of a circle, but if it's only a half of a circle (semi-circle) you would use the formula 2*pi*r/2 If it's a quarter of a whole circle, or a fifth of a circle, then you would divide it by 4 or 5.