Question

The length of a rectangle is four times its width. Its perimeter is no greater than 170 cm. Find the greatest possible dimensions of the rectangle.

Answer 1

Explanation:

let the length be =L

the width is 4 × the length

so the width will be 4L

the formular for the perimeter of a rectangle is =2(L +W)

170=2(L +4L)

170=2(5L)

170=10L

17=L

so the width is 4 × the length

17×4

=68

L=17

W=68