a hall is 15m long, 10m wide and 5m high. Its wall and the roof are to be whitewashed from inside. find the total area to be whitewashed.
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7
20is the area of white washed
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15
csa of cuboid=2*(l+b)*h
2*15+10*5
50*5
=250m
tsa of cuboid= l*b*h
=15*10*5
=150*5
=750
csa-tsa=450m
2*15+10*5
50*5
=250m
tsa of cuboid= l*b*h
=15*10*5
=150*5
=750
csa-tsa=450m
jatinkumarsharma:
is it right
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