Question

A triangle ABC has a perimeter of 59cm. AB is twice the length of AC and 6cm longer than BC. Find the length of AB.

Answer 1

Answer: 6 cm

solution let the length of AB= x cm the length of BC = (2x-2) cm, and the length of AC = (x+10) cm The perimeter of ABC=32 cm

x+2x-2+x+0=32

4x+8=32

4x=24

x=6