Question

find the circumference of a semicircle of diameter 10 cm​

Answer 1

answer is 180/7cm

for whole solution see the attached picture

Answer 2

Answer:

circumference of a semicircle = 15.7 cm

Step-by-step explanation:

Circumference of a semi-circle = πr

Here r = radius

diameter = 10 cm   ( Given)

radius = diameter/2

∴ radius = 10/2 = 5 cm

π = 3.14

∴ circumference of a semi-circle = 3.14×5 = 15.7 cm