Answers

2016-02-02T18:44:59+05:30
The sum of the volume of the smaller cubes= volume of the larger cube
Let the side of the larger cube be'a'.
 3^{3} + 4^{3} + 5^{3} = a^{3}
27+64+125= a^{3}
a= \sqrt[3]{216}
a=6cm
therefore side of the larger cube is 6cm
the surface area of the larger cube is 6 a^{2} =6( 6^{2} )
=216 cm^{2}
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