I believe 270 because a circle's perimeter is 360 so if you divide it by 0.75, you get 270.
The perimeter is also known as the circumference of a circle.
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
The perimeter of a circle
The boundary or perimeter of a circle is its circumference.
I believe 270 because a circle's perimeter is 360 so if you divide it by 0.75, you get 270.
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
It is a 90 degree turn or circumference/4
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.
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 perimeter of a circle is its circumference
What is the perimeter of a square
No because the perimeter of a circle is its circumference
circumference
The perimeter of a circle would be the circumference.
The perimeter of a circle is its circumference
Pi (3.1415...) times the diameter of the circle = the perimeter