the perimeter of triangle is is 75 cm . 2 of it s sides are 20 cm and 30 cm . find the third side ???? Share with your friends Share 0 Tanishka answered this Third side= 25 as, perimeter= 75 third side = 75- (20+30) = 75- 50 =25 2 View Full Answer Rahul answered this if one side is 20 cm and other side is 30 cm so the 3rd side would be = 70 - [ 20 + 30 ] i .e . 20 cm -1
