The equation for area of a circle is A=pi x R x R. A semicircle is half a circle, so we calculate the area of a circle and divide by 2. The area of the circle would be approximately 1384.74. Thus the area of the semicircle would be 692.37.
The area of a semicircle is half of the area of a circle. The area of a circle is pi x radius x radius. So the area of a semicircle is 1/2 x pi x radius x radius or (pi x radius x radius) / 2.
Calculating the radius of a semicircle depends on what information about the semicircle is given.
In a semicircle, the diameter is the straight line. It is also equal to double the radius, and that property allows it to be used when calculating area and circumference.
Radius is = to half the diameter so.... when the radius of the semicircle is 5ft then the diameter is 10ft.
a semicircle is half of a circle... so like a circle cut in half, in a straight line. just for some information you may also need in the future: area of a semicircle: multiply the radius by itself and then multiply that by pi (approx. 3.14). divide that by 2. perimeter (circumference) of a semicircle: pi times radius. hope that helps.
The area of a semicircle is half of the area of a circle. The area of a circle is pi x radius x radius. So the area of a semicircle is 1/2 x pi x radius x radius or (pi x radius x radius) / 2.
Area of a semicircle = (pi*radius^2)/2
50.25cm
Calculating the radius of a semicircle depends on what information about the semicircle is given.
That would depend on the radius which has not been given but the area of the semi circle will be (pi*radius squared)/2
The diameter of the semicircle will be twice the radius.
Pi*radius squared is how to find the area of a semicircle
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} ).
Area in square inches = (pi*radius^2)/2
2pi sq cm
The area of a semicircle can be calculated using the formula ( A = \frac{1}{2} \pi r^2 ), where ( r ) is the radius. For a semicircle with a diameter of 22 mm, the radius is 11 mm. Plugging this into the formula gives ( A = \frac{1}{2} \pi (11)^2 \approx 190.99 , \text{mm}^2 ). Thus, the area of the semicircle is approximately 190.99 mm².
In a semicircle, the diameter is the straight line. It is also equal to double the radius, and that property allows it to be used when calculating area and circumference.