A) 8 cm
B) 6 cm
C) 14 cm
D) 9 cm
E) 12 cm
Correct Answer: B
Solution :
Volume of three cubes \[=({{4}^{3}}+{{5}^{3}}+{{3}^{3}})c{{m}^{3}}=(64+125+27)c{{m}^{3}}\]\[=216\,\,c{{m}^{3}}\] Now, volume of the new cube\[=216\,\,c{{m}^{3}}\] \[\therefore \]Side of the new cube\[=\sqrt[3]{216}cm=6\,\,cm\]You need to login to perform this action.
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