Answer:
4π cm
Step-by-step explanation:
GIVEN :-
- Diameter of half circle = 8cm
TO FIND :-
- Circumference of half circle
FACTS TO KNOW BEFORE SOLVING :-
Circumference of a circle with radius 'r' is = [tex]2\pi r[/tex]
⇒ Circumference of half-circle with radius 'r' = [tex]\frac{2\pi r}{2} = \pi r[/tex]
SOLUTION :-
Radius = [tex]\frac{Diameter}{2} = \frac{8}{2} = 4[/tex]
So , Circumference of half-circle = [tex]\pi \times 4 = 4\pi[/tex] cm
