A semicircle is half a circle, so its area is half that of a circle:
radius = 1/2 diameter = 22 ÷ 2 = 11
area = 1/2πr2
= 1/2π112
~= 190 sq in
A semicircle is 1/2 of a circle. Find the area with the diameter you are given as if you had a whole circle, then divide that answer by 2 to get the area of the semicircle.
The perimeter of the semicircle is 71.98 inches, approx. The semicircle cannot be covered by any number of inches because an area (in 2-dimensional space) cannot be covered by a length (in 1-dimensional space).
About 153.86 square in. To find out the area of a circle do: r^2*pi.
2pi sq cm
Approximately 50.265 square inches.
The approximate area of a circle with a 12-inch diameter is: 113 square inches.
706.86 square inches
A semicircle is 1/2 of a circle. Find the area with the diameter you are given as if you had a whole circle, then divide that answer by 2 to get the area of the semicircle.
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.
Approximately 50.265 square inches.
The perimeter of the semicircle is 71.98 inches, approx. The semicircle cannot be covered by any number of inches because an area (in 2-dimensional space) cannot be covered by a length (in 1-dimensional space).
25
2328.31286 cm2
About 153.86 square in. To find out the area of a circle do: r^2*pi.
2pi sq cm
Approximately 50.265 square inches.
The diameter of the circle is 21.4 feet, approx.