three cubes of edge 10 cm each are placed side by side and stuck together if the outer surface alone is painted at 2 paise cm2 finx the cost of painting
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Let length of each edge of cube be l cm=10cm
When they are stuck together,
the length of the cuboid so formed has length of 3l=30cm
Height will remain the same=10cm and
breadth will also remain the same=10cm.
Cost of painting=rate*csa of cuboid
=2(l+b)*h*0.02
=2(30+10)*10*0.02
=Rs. 16
When they are stuck together,
the length of the cuboid so formed has length of 3l=30cm
Height will remain the same=10cm and
breadth will also remain the same=10cm.
Cost of painting=rate*csa of cuboid
=2(l+b)*h*0.02
=2(30+10)*10*0.02
=Rs. 16
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