What is the length?

3 ⤊

the area of a rectangular room is 104 sq.ft. The length of the room is 5 ft. longer then it is wide.

2007-05-02 09:32:36 · 2 answers · asked by minomkitty 1 in Science & Mathematics ➔ Engineering

and how did you arrive at that answer

2007-05-02 09:35:01 · update #1

2 answers

Area is length times width so let W be the room width
L = W + 5
Area = LW or W*(W+5) = W^2 + 5W = 104

Rewriting in standard form
W^2 + 5W -104 = 0

Solve using quadratic formula
W = 8
Since L = W + 5, L = 13

Check:
8*13 = 104

2007-05-02 09:42:12 · answer #1 · answered by dogsafire 7 · 3⤊ 0⤋

9.2639 ft.

2007-05-02 09:58:06 · answer #2 · answered by jimmymae2000 7 · 0⤊ 4⤋