Question

In figure, DE || BC, AE = 3 cm, CE = 6 cm, AD = 4 cm, then find the
length of AB.

Answer 1

Answer:-

given :- DE || BC

AE = 3cm

CE = 6cm

AD = 4cm

By B.P.T

AD / BD = AE / EC

4 / BD = 3 / 6

4 / BD = 1 / 2

BD = 4 × 2

[ BD = 8cm ]

AB = AD + BD

AB = 4 + 8

[ AB = 12 cm ] hence proved.