Three cubes whose edges are 3 cm, 4 cm and 5 cm respectively are melte – McqOptions

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1.	Three cubes whose edges are 3 cm, 4 cm and 5 cm respectively are melted to form a single cube. Find the surface area of the new cube.
A.	\[\Rightarrow \]
B.	\[r=12cm.\]
C.	\[(12\times 8-5\times 3)Sq.m\]
D.	\[96-15=81sqm\]
Answer» E.

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