Area of Semi Circle : Solved Examples

Area of Semi Circle

Circumference of Semi Circle

Look at the below image and find the area of shaded semi circle where A) When Radius is 10 cm B) When Diameter is 40 cm A) When Radius is 10 cm Given things are Radius : 10 cm Area of Semi-Circle = 1 2 X (π) X radius2 1 2 X 22 7 X 102 = 157.14cm2 B) When Diameter is 40 cm Given things are Diameter : 40 cm As radius is half of diameter we get Radius = 40 ÷ 2 = 20 cm Area of Semi-Circle = 1 2 X (π) X radius2 1 2 X 22 7 X 202 = 628.57cm2 Related Question Examples Look at the below image and find the area of shaded semi circle where A) When Radius is 10 cm B) When Diameter is 40 cm