The figure given below shows a solid made up of 10 identical cubes. When the solid is painted the total area that is painted is 360cm2. What is the volume of the solid ?
A
80cm3
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B
216cm3
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C
270cm3
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D
2160cm3
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Solution
The correct option is C270cm3 Let us consider the painted solid surface given below:
Bottom surface =6
First layer surface =16
Second layer surface =8
Third layer surface =10
Therefore the total number of painted surface = 40.
Since it is given that the total area of the solid painted is 360cm2, therefore,