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)
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)
to find the perimeter of a circle you simply do this (pi x D )
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)
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.
The answer will depend on what the formula is for: the perimeter or area of the segment.
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.
Circumference or perimeter = 2*pi*radius or pi*diameter
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...
It is a 90 degree turn or circumference/4