Question

In figure ABCD is an rectangle if AB =1/2BC and sum of all sides is 90 cm.Find AB and BC​

Answer 1

Step-by-step explanation:

In Rectangle opposite sides are equal.

so,

Given,

AB=1\2BC

AB + BC + CD + DA = 90 cm

AB = CD

BC = DA

AB + BC + AB + BC = 90 cm

2AB + 2 BC = 90 cm

2×1/2BC + 2BC = 90 cm

3BC = 90 cm

BC = 30 cm

AB = 1/2BC

AB = 1/2(30)

AB = 15 cm

AB = 15 cm, BC = 30 cm