1.

Three cubes of sides 3 cm, 4 cm and 5 cm are meltedand a new cube is formed. Find the side of the newcube.

Answer»

Total volume of 3 cubes = (33+ 43+ 53) cm3

= (27 + 64 + 125)cm3

= 216 cm3

Now volume of new cube = 216 cm3

So edge of new cube = cube root of 216 cm3

= 6 cm

how many cubes of side 12 mm are contained in a cube of side 24 cm.



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