SOLUTION: find the number of tiles required if the floor area is 17.5 m square and tile area is 625 cm square

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Question 729580: find the number of tiles required if the floor area is 17.5 m square and tile area is 625 cm square
Answer by KMST(5328)   (Show Source): You can put this solution on YOUR website!
We want both measurements in the same units
There are 100 centimeters in a length of 1 meter, so the conversion for square meters to square centimeters goes like this:

So
To tile a surface with an area of
using tiles with a surface area of per tile, we need
tiles.
If the home improvement store would lend you a calculator, it is easy to do that division. Or maybe you brought a calculator, or there is a calculator function in your cell phone. Or maybe you would enjoy doing that calculation with pencil and paper.

An easier calculation:
We are using tiles such that each has a surface area of

How many of those tiles do we need per of floor?


At tiles per we will need
tiles.
That is how I could calculate it in my head.

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