Question

I need help with this !
35 points
Also need a full explanation

Answer 1

length= 18units, width=6units

Explanation:

let the width of rectangle= x

then, length= 3x

perimeter= 2l+2B

48=2(3x)+2(x)

48= 6x+2x

x=
`(48)/(8)`

x= 6

width=x=6units

length=3x=3(6)= 18units