Pi x radius(R) squared
e.g radius of circle is 5cm
A=3.14x5 squared
Area is 78.5
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Make it a whole circle. Find the area. Divide by two.
With great difficulty because a circle does not have volume but it does have an area. Area of a circle = pi*radius2 and measured in square units
If the radius of the circle is R, then the area of the whole circle is πR2 So the area of the semicircle is 0.5*πR2
From Gyanesh Anand Cut it into different sectors of small central angle.then find the area of each sector and add them up to find that area of circle is equal to 2*pi*r
11.3