A semicircle has a diameter of 8cm, what it the area?
Area of a circle = pi × r2
Area of semi-circle = 1/2(Area of circle)
= 1/2(pi × r2)
Diameter = 2r
r = 8÷2 = 4
Area of semi-circle = 1/2(pi × 42)
AP
Area of a circle = pi × r2
Area of semi-circle = 1/2(Area of circle)
= 1/2(pi × r2)
Diameter = 2r
r = 8÷2 = 4
Area of semi-circle = 1/2(pi × 42)
