ΔABC ~ ΔDEF, AB=9.1 cm and DE=6.5 cm, if the perimeter of ΔDEF=25 cm :

ΔABC ~ ΔDEF, AB=9.1 cm and DE=6.5 cm, if the perimeter of ΔDEF=25 cm, what is the perimeter of ΔABC in cm?

  1. 35
  2. 28
  3. 42
  4. 40
Anurag Mishra Professor Asked on 17th December 2015 in Maths.
Add Comment
1 Answer(s)

Answer:  (1) 35 

Solution:-
AB = 9.1 cm  and DE = 6.5 cm 
Then the ratio of Side AB and DE = 9.1/6.5
 = 7: 5

The perimeter of triangle DEF = 25 cm 
Then the perimeter of triangle ABC = 25 x 7/5
 = 5 x 7 
 = 35 cm 

Hence, the correct answer is option (1) 35. 

Anurag Mishra Professor Answered on 17th December 2015.
Add Comment

Your Answer

By posting your answer, you agree to the privacy policy and terms of service.