Question

If the semicircle has a diameter of 20cm, what is the perimeter
Take the value of
π
to be 3.14

Answer 1

Step-by-step explanation:

diameter = 20cm

Radius = d/2 = 10cm

The circumference of semi - circle

= 1/2 circumference

=(1/2) 2 π r

= π r

So the perimeter = 3.14 × 10 r =31.4

therefore the perimeter is equal to 31.4 cm