54.95
You can multiply the radius by pi to get the length of the semicircle.
2pi sq cm
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
The diameter of the semicircle will be twice the radius.
Area in square inches = (pi*radius^2)/2
You can multiply the radius by pi to get the length of the semicircle.
The approximate radius is five (5) inches.
The answer will depend on what measure of the semicircle is 5 inches: its radius or diameter.
2pi sq cm
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
37.7 centimeters. I just took that test. ;)
Calculating the radius of a semicircle depends on what information about the semicircle is given.
The diameter of the semicircle will be twice the radius.
Area in square inches = (pi*radius^2)/2
Radius is = to half the diameter so.... when the radius of the semicircle is 5ft then the diameter is 10ft.
The arc length of a sector that is 125 degrees and has a radius of 20 inches is: 43.63 inches.
Radius is 30 inches.