Answers

2015-03-13T13:06:41+05:30
Area=2lb+2lh+2bh
=2(60*40)+2(60*30)+2(40*30)
=2*2400+2*1800+2*1200
=4800+3600+2400
=10800cm^2
cost of painting=Rs.10800
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2015-03-14T15:55:08+05:30
total surface area=2lb+2lh+2bh
l=60
b=40
h=30
=2(60*40)+2(60*30)+2(40*30)
=2*2400+2*1800+2*1200
=4800+3600+2400
=10800 cm²

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