Top Answer

perimeter_of_quarter_circle = 1/2πr + 2r

For the arc bit of the perimeter:

circumference of circle = 2 x π x radius

quarter of this = 1/2 x π x radius

The two straight sides are radii which need to be added on making:

perimeter_of_quarter_circle = 1/2 x π x radius + 2 x radius

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1The 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 )

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.

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 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

2*pi*radius = perimeter or circumference of a circle radius = circumference/2*pi

There is no such thing as the perimeter of a circle. The circumference, however, is 12.4*pi (since the formula is 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.

It is a 90 degree turn or circumference/4

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

Normally, the amount of the side of the rectangle below the quarter circle on it would expected to be calculated. However, the radius of the circle equals the amount that is subtracted, but in calculating the perimeter it has to be added back in again as it forms part of the perimeter. Thus the perimeter is the perimeter of the rectangle plus a quarter of the circumference of the circle. → perimeter = 2 × (20cm + 2 cm) + ¼ × 2 × π × 11 cm ≈ 44 cm + 3.14 × 11/2 = 61.27 cm.

The perimeter of a quarter circle is 2 radii plus a quarter of the circumference of the whole circle: → 2 × radius + ¼ × 2 × π × radius = 32.13 cm → radius × (2 + π/2) = 32.13 cm → radius = 32.13 ÷ (2 + π/2) cm ≈ 9.00 cm

2*pi*radius or pi*diameter

You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.

There can be no such formula in general. A formula will exist if the area is a regular polygon (or a circle).

the formula perimeter depends upon the shape of the figure . The perimeter of rectangle = 2 X( l + b). perimeter of triangle = sum of all sides . perimeter of square = 4 X side . perimeter of circle = 2 X pi x r .

The perimeter of a circle is its circumference

Half the Circumference + the DiameterCircumference of a circle = pi X d ,so perimeter of a semi-circle = (3.142 X Diameter) + Diameter

name for the perimeter of a circle?

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