l = 3 cm long and lengths of line m and n are three fourth the length of l. are m and n are equal? Share with your friends Share 0 Varun.Rawat answered this we have, l = 3 cmnow, m = n = 3 / 4 of l = 3 / 4 × 3 = 9 / 4 cm = 2.25 cm -2 View Full Answer