the perimeter of a rectangular room is 24 meters. The width of the room is 4 meters. Find the length of the room.

Answer: 8 meters
Step-by-step explanation:
since the room is a rectangle, we know that the length on both sides and the with on both sides are equal.
since the width is 4 meters, we can multiply that by 2 to see the total width of both sides. 4*2 = 8 meters
now we know the width of both sides, so we can subtract that amount from the total perimeter. 24 - 8 = 16 meters. there are 16 meters left in the perimeter.
since the length of the room is the same on both sides, we divide the total length left by 2 to see the length of one side. 16/2 = 8 meters