Question

15. The length of a roctangle is three times its width and its perimeter is 32 m. Find the length of the
rectangle​

Answer 1

Step-by-step explanation:

let length be x

so breadth be y

ATQ

x=3y.

now formula for perimeter is 2(x+y)

put x =3y

and

2(4y) = 32

so y = 4m

x = 7m

Answer 2

let the width = x

and length = 3x

perimeter = 32m

area of rectangle = 2(L+B)

32m = 2( 3x +x)

32m = 8x

32/ 8 = x

x = 4m

width = 4 *3 = 12m