Answers

2016-03-02T15:52:07+05:30
True ,this answer is true

1 5 1
2016-03-02T15:53:15+05:30

true.

LSA of cube = 4x20x20 = 1600

1 1 1
how?
can u explain
sure !
LSA of cube = 4xaxa , a=20 , thus 4x20x20 = 1600