Monica's rectangular living room is 12ft by 15ft. She has a square rug that covers 5/9 of the floor. What is the side length of the square rug?

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A rectangle's area is just the product of its base times its height. (A = bh) In this case, the area of her room's floor is 12 × 15 = 180  ft². 5/9 of 180 ft² is 100 ft². A square IS a rectangle, so we can find the area with A=bh...but since all of the sides are the same length, we would just use A=s². Let's use what we know to solve for s. A = s² 100 = s² √100 = s 10 = s

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