The surface area of a cylinder with a radius of 3.8cm and a height of 11cm is 353.37cm2
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.
The circumference of a circle, if the radius is 11cm, is about 69.12cm
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.
The surface area of a cylinder with a radius of 3.8cm and a height of 11cm is 353.37cm2
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
If you mean the area of a circle then it is: pi times radius squared
50.25cm
pi*112 = 380 square cm
That would depend on the radius which has not been given but the area of the semi circle will be (pi*radius squared)/2
Calculating the radius of a semicircle depends on what information about the semicircle is given.
Pi*radius squared is how to find the area of a semicircle
The diameter of the semicircle will be twice the radius.
Area in square inches = (pi*radius^2)/2
2pi sq cm