a cuboidal aluminium box is 15cm by 25cm by 20cm. Find the cost of aluminium required for making 20 such boxes at the rate of ₹15 per m^2
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surface area = 2(lb+bh+hl)
s .a = 2(15*25+25*20+20*15)
s . a = 2(1175)
s.a = 2350cm ^2
s.a = 2350/1000cm
s.a = 2.35m^2
1m^2=₹15
=2.35m^2= 20*2.35
cost =47₹....
s .a = 2(15*25+25*20+20*15)
s . a = 2(1175)
s.a = 2350cm ^2
s.a = 2350/1000cm
s.a = 2.35m^2
1m^2=₹15
=2.35m^2= 20*2.35
cost =47₹....
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