Question

A rectangular courtyard is 18m 72 cm long 13 m 20 m broad .it is to paved with square tiles of the same size .find the least possible no of such tiles​

Answer 1

Answer - 3m

Explanation

Square title of side X meters will have area x^2 meters. This area must fully divide the courtyard area of 18x21 meters. Therefore if you observe 3m is the size of square title whose area totally divide 18x21 meters.

18x21

-------- = 42 titles.

3x3

Therefore option c is the correct answer.