Question

5. The rectangular pool has an area of 520 square feet. The length of 3

more than its width. Which of the following equations represent length 2, in feet of the room?
a) z(z+11) =520
b) z(z - 11) = 520
c) z(11 - 2) = 520
d) - 112 - 520 = 0
e) 2 + 112 - 520 = 0
11z +520 =

Answer 1

z*(z - 3) = 520

Explanation:

Use the following representations:

Width: W

Length: L = W + 3, or W = L - 3

Area = L*W = L*(L - 3) = 520

Equation b) is the correct one: z*(z - 3) = 520