Question

P = 19 in.wl = 5.5 in.solve the formula for w

Answer 1

Recall that the perimeter P = 2(l + w)

Given that P = 19 l = 5.5

19 = 2(5.5 + w)

Divide both sides by 2

9.5 = 5.5 + w

Subtract 5.5 from both sides

9.5 - 5.5 = w

w = 4 in.