Question

Given DEF is 4 times smaller than ABC. Find the length perimeter of ABC and DEF

Answer 1

on the biggest triangle, if the angles are the same, then both side lenghts are 49cm

if the bigger one is 4x bigger than the smaller one, then the side below is 4*7.5 = 30cm


So the perimeter of the bigger triangle is= 49*2+30=128cm
the perimeter of the smaller one is 4 times smaller = 128/4 = 32cm

Answer 2

that's what I ending up getting, thanks (: