Question

Three metallic solid cubes of sides 6 cm,
8 cm and 10 cm are melted to form a
single cube. The length of the edge of the
new cube is
(A) 15 cm
(B) 14 cm
(C) 13 cm
(D) 12 cm​

Answer 1

Answer:

volume of new cube= sum of volume of all cubes

(L)3=(1)3+(1)3+(1)3

L=3√216+512+1000

L=3√1728

L=2x6

L=12 cm

Answer 2

Answer:

12

Step-by-step explanation:

Volume of first metal cube = a3=63=216cucma

3=63=216cucm

Volume of second metal cube = a3=83a3=83= 512 cu.cm.

Volume of third metal cube = a3=103a3=103 = 1000 cu.cm

Total Volume = 1728 cu.cm.

The length of edge of the new cube = √1728=12 cm.