∆ABC~∆DEF.AB=3.5cm,BC=2.5cm,CA=4cm,DE=10.5cm.Find perimeter of ∆DEF. Created by itzkillerbro.

∆ABC~∆DEF.AB=3.5cm,BC=2.5cm,CA=4cm,DE=10.5cm.Find perimeter of ∆DEF

June 2023 1 4 Report

∆ABC~∆DEF.AB=3.5cm,BC=2.5cm,CA=4cm,DE=10.5cm.Find perimeter of ∆DEF

Because triangle ABC ∼ triangle DEF

∴ perimeter of triangle ABC : perimeter of triangle DEF = AC : DF

Perimeter of triangle ABC = 4+3.5+2.5 = 10cm

10 : perimeter of triangle DEF = 2.5 : 7.5

Cross multiplying

Perimeter of triangle DEF = 10× 7.5/2.5

∴ perimeter of triangle DEF = 30cm