Length and perimeter

Question

A school is constructing a rectangular play area against an exterior wall of the school building it uses 120 feet of fencing material to enclose three sides of the play area a rectangle with one long edge as the side of a school building long edge marked length l short edge marked length w write an equation to represent l l the length of the play area in feet as a function of w w the width in feet

width (feet) Length (feet) area sq (feet)

10

30

40

w

Write an equation to represent l, the length of the play area in feet , as function w, the width in feet

Answer 1

Length l = 120 - 2w

Substitute values for w, then compute area A = l * w

is that all the problem is asking ?