Q12 of 76 Page 18

A cube whose volume is 1/8 cubic centimetre is placed on top of a cube whose volume is 1 cm3. The two cubes are then placed on top of a third cube whose volume is 8 cm3. The height of the stacked cubes is

Given,


Volume of 1st cube =


Volume of second cube = 1 cm3


Volume of third cube = 8 cm3


∴edge of first cube = a1 =


∴ edge of second cube = a2 =


∴ edge of third cube = a3 =


Hence height of cubes together = a1+a2+a3 =

More from this chapter

All 76 →
10

The volume of a cube whose surface area os 96 cm2, is

 11

The length, width and height of a rectangular solid are in the ratio of 3 : 2 : 1. If the volume of the box is 48 cm3, the total surface area of the box is

 13

If the areas of the adjacent faces of a rectangular block are in the ratio 2 : 3 : 4 and its volume is 9000 cm3, then the length of the shortest edge is

 14

If each edge of a cube, of volume V, is doubled, then the volume of the new cube is