Three cubes each of side 10 cm are joined to form a cuboid find the following the ratio of surface are of resulting cuboid to the sum of the surface areas of 3
cubes
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When we join the the three cubes a cuboid of dimensions 30,10,10 will be formed.
so we will findthe surface area of cuboid for the answer.
Surface afea of cuboid = 2 (l×b+b×h+h×l)
(note:l=length b=bredth h=height)
2 (10×30+10×10+30×10)
=2×700
=1400cm^2
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