Question

perimeter of semi circular field is 108m. calculate the diameter of the field​

Answer 1

Answer:

Let the radius of the protractor be r cm. Then,

Perimeter = 108 cm

21(2πr)+2r=108

πr+2r=108

$\frac{22}{7}$ ×r+2r=108

r=21

Diameter of protractor = 2r=42 cm