Question

Find the perimeter of a semicircular protractor whose diameter is 14 cm.

Answer 1

Perimeter of a semicircular protractor = Circumference of semicircular protractor + diameter of semicircular protractor

`=1/2(2pi"r")+"d"`

`=pi"r"+"d"`

`=22/7xx7+14`

= 22 + 14 

= 36 cm 

Hence, the perimeter of a semicircular protractor is 36 cm.