How many 9-inch-square floor tiles are needed to cover a rectangular floor that measures 12 feet by 15 feet?

1 answer:

6 0

To cover the width we need 12÷¾=12×4/3=16 tiles.
To cover the length we need 15×4/3=20 tiles, so to cover the floor area we need 16×20=320 tiles.

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