Alma's room is a rectangle. Its length is 5 yards and its width is 12 feet. It has a 9-foot ceiling. What is the perimeter of her room?

1 Answer
Ricardo A.
Oct 10, 2016

The perimeter of Alma's room is 144 feet

Explanation:

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As we can see from the drawing above, each of the dimensions (length, width and height) is present 4 times. That means we have to add 4 times each dimension in order to find the perimeter of the room, so:

#P=4*12" feet"+4*15" feet"+4*9" feet"#
#P=48+60+36#
#P=144#

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