Formula for the area of a circle: A = pi * r^2
A semi-circle is half of a circle. So, we will need to divide the area of the total circle by 2 to find the area of a semi-circle.
r = d / 2
r = 6 / 2 = 3
A = pi * 9
A = 9pi
Semi-circle:
A = 9pi / 2
A = 4.5 pi cm^2 or 14.14 cm^2
Hope this helps!! :)
Answer:
Area of the semicircle = [tex]14.13cm^2[/tex]
Step-by-step explanation:
Area of a circle=[tex]\pi r^2[/tex]
Area of a semicircle= [tex]\pi r^2/2[/tex]
For:
Diameter=6 cm
Radius= 6/2=3 cm
As, [tex]\pi =\frac{22}{7}=3.14[/tex]
Area of the semicircle:
=[tex](3.14*3*3)/2[/tex]
[tex]=(3.14*9)/2\\\\=28.26/2\\\\=14.13cm^2[/tex]
Area of the semicircle = [tex]14.13cm^2[/tex]
