A square wall, is covered with square tiles. There are 85 tiles altogether along the two diagonals. How many tiles are there on the whole wall?

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26-11-2016
Mathematics

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A square wall, is covered with square tiles. There are 85 tiles altogether along the two diagonals. How many tiles are there on the whole wall?

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alsteva alsteva · Answer 1 · 2016-11-29T07:13:43+01:00

alsteva alsteva

29-11-2016

Not counting the middle tile which both have we get 84.

Divide that by 2 because we have two diagonals.

We get 42 + 1 (middle tile) for one diagonal.

So one side has 43 tiles, too. The total number of tiles is
[tex]43^2=1849[/tex]

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