A rectangular room is 13 meters longer than it is wide, and it’s perimeter is 70 meters. Find the dimensions of the room. Use X as your variable.

Answer 1

P = 2L + 2W or P =2L + 2X if you prefer X, replace W by X

70 = 2(13+W) + 2W = 26 + 4W

4W = 70-26 = 44

W = 11 meters

L = 13+W = 13+11 = 24 meters

24 by 11 meters

70 = 2(24+11) = 2(35)