Find the area of the semicircle.
Mathematics · High School · Tue Nov 03 2020
Answered on
Find the area of a semicircle.
Since it is known that the area of a circle = πr^2, and half of a circle is a semicircle.
By logic we can denote that the area of a semicircle is,
Area of semicircle = π(r^2/2)
Example:
Given a semi circle with a radius of 4 cm, what is its total area?
Area of semicircle = π(4^2/2)
Area of semicircle = π(16/2)
Area of semicircle = π(8)
Area of semicircle = 25.13 cm^2
Answered on
The formula which is used to calculate the
area of the semicircle is expressed as,
Area of semicircle (when the radius is given) = πr2/2
Area of semicircle (when the diameter is given) = πd2/8
where 'r' is the radius, and 'd' is the diameter.