Please Help Me With This Problem.

Question

How many 4in. Square tiles will it take to cover a room that measures 18feet by 15feet?

Answer 1

A 4 inch tile is 4 inches by 4 inches.

There are 9 4 inch tiles per square foot.:

Therefore our conversion factor is: 1 ft^2 = 9-4" tiles

To find out how many 4" tiles are on an area of 15' by 18', we set up the problem with a format.

This format is made up of 4 parts:

to find = given conversion factor(s)

x 4" tiles = (15')(18') (9-4" tiles / 1 ft^2) = 2430-4" tiles

The answer is that it will take 2430 tiles, that are 4" square, to cover an area of 15' by 18'.