the length of a rectangle is 3 times the width. the perimeter is 96 cm. find the width and the length

Question

the length of rectangle is 3 times the width. the perimeter is 96cm find the width and length.

Answer 1

Width of rectangle say = x

length of rectangle is be 3x

Perimeter of rectangle = 2(l+b)

96 = 2(3x+x)

96 = 2(4x)

96 = 8x

Divide by 8 to each side.

96/8 = 8x/8

12 = x

width = 12cm

length = 3*12

= 36cm