give me the answer of 6.
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size dependes on unit in which u want
However if u want in cm
Then,
1st convert 20m 16cm in cm = 2016cm and 15m 60cm =1560cm
now factorize them
2016= 2*2*2*2*2*3*3*7
1560= 2*2*2*3*5*13
common factor are 2*2*2*3 = 24
use 24 x 24 cm for stones nos will be
(2016/24) x (1560/24) = 84 x 65 = 5460nos
However if u want in cm
Then,
1st convert 20m 16cm in cm = 2016cm and 15m 60cm =1560cm
now factorize them
2016= 2*2*2*2*2*3*3*7
1560= 2*2*2*3*5*13
common factor are 2*2*2*3 = 24
use 24 x 24 cm for stones nos will be
(2016/24) x (1560/24) = 84 x 65 = 5460nos
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