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How do you find the perimeter of a shape that has a semicircle?

To find the perimeter of the curved section of the semi-circle: Perimeter of semicircle = Pi x radius If you also need to the find the perimeter of the straight part of the semicircle (the diameter), it is simply double the radius.


How do you find the perimeter of a semicircle?

The circumference of a semicircle is pi times the radius plus the diameter.


How do you find the diameter of a semicircle when radius is given?

The diameter of the semicircle will be twice the radius.


How do you find the radius of a semicircle?

it is have the diameter


How do we find a perimeter of a semicircle?

It is its diameter plus half of its circumference


How do you find the radius of a semi circle with an equal perimeter to a rectangle with 1 side 3cm and the other side equal to the radius?

Suppose the radius is R cm. Then the perimeter of the rectangle is 2*(3+R) = 6 + 2R cm. The length of the arc of the semicircle is pi*R and the length of the diameter is 2*R so the perimeter of the semicircle is pi*R + 2R The two perimeters are equal so 6 + 2r = pi*R + 2R That is, 6 = pi*R and so R = 6/pi


How do you find the perimeter of a semicircle if its diameter is 45 cm?

Perimeter of the semicircle including its base: 180/360*pi*45+45 = 115.686 cm rounded to 3 decimal places


How do you find the length of the arc in a semi circle when its radius is given?

To find the length of the arc of a semicircle, use the formula ( L = \pi r ), where ( r ) is the radius of the semicircle. Since a semicircle is half of a full circle, the total circumference of a circle is ( 2\pi r ), and the length of the arc for the semicircle is half of that. Simply multiply the radius by ( \pi ) to get the arc length.


How do you find the area of a semicircle using pi?

To find the area of a semicircle, you first need the radius (r) of the semicircle. The formula for the area of a full circle is ( A = \pi r^2 ). Since a semicircle is half of a circle, you divide that area by 2: ( \text{Area of semicircle} = \frac{1}{2} \pi r^2 ). Thus, the area of the semicircle can be expressed as ( \frac{\pi r^2}{2} ).


How do you find the perimeter of the circle of radius r?

by using formula 2. pie. r


How do you find the perimeter of a semicircle with radius 7?

Perimeter = (pi*7)+14 = 35.99114858 or about 36 units of measurement Answer 2 (ylon2): Perimeter= 2*r+2*pi*r/2=r*(2+pi) = r*5.14=35.98 or about 36 units of measurement (ylon2 calkulated)


What is the perimeter of a semicircle if the diameter is 8cm?

Well, darling, the perimeter of a semicircle is the sum of the semicircle's curved edge (half the circumference of a full circle) and the diameter. So, with a diameter of 8cm, the curved edge would be half of the circumference of a circle with a diameter of 8cm, which is 8π cm. Add that to the diameter, and you get a sassy perimeter of 8π + 8 cm, or approximately 33.13 cm.