Question

10. The length of rectangle is three times
it's width and it's perimeter 56m. Find its
length.​

Answer 1

Answer:

let , width = x

length = 3x

Given , it's perimeter = 56cm

=> 2(l+b) = 56 cm

=> 2(4x) = 56 cm

=> 8x = 56cm

=> x = 56/8

=> x = 7cm

therefore , it's length = 3(x) = 21cm

Answer 2

Answer:

21

Step-by-step explanation:

• let breath is =X. then length is =3x. the perimeter of rectangle is. {3x+x}2= 56. 4x=28. x=7. length=. 3×x =3×7=21