A protractor is a semi circle of radius 6.1cm Calculate the perimeter of a protractor?
1 Answer
May 7, 2018
Explanation:
#"the perimeter (P) of a semicircle is"#
#P="diameter "+"arc length"#
#color(white)(P)=2r+1/2xx2pir#
#color(white)(P)=(2xx6.1)+(pixx6.1)~~31.36" cm"#
