Question

If the perimeter of the semi circular protractor is 72m. find the diameter of the protractor. ​

Answer 1

hope this answer will help you.

Answer 2

πr + 2r = 72 cm

=> r(π+2) = 72cm

=> r( 22/7+2) = 72 cm

=> r(36/7) = 72 cm

=> r = 72* 7/36

=> r = 14 cm

diameter = 14 cm