A rectangular courtyard is 18m 72cm long and 13m 20cm broad. It is to be paved with square tiles of the same size. Find the least possible number of such tiles.

Explanation

It is given that a rectangular hall is` 18m 72cm long and 13m 20cm `broad which means that rectangular hall is `1872` cm long and` 1320` cm broad.



The given integers `1872 `and `1320` can be factorised as follows:


`1872=2×2×2×2×3×3×13

`1320=2×2×2×3×5×11`


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