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2014-04-03T11:55:37+07:00
s = 23 cm
L = s x s
=23 x 23
= 529 cm^2
1 5 1
2014-04-03T11:56:37+07:00
L = s×s
l= 23 cm × 23cm
l=  529 cm2
1 5 1