Question

How many cubes each of side 2cm are needed to make a large cube with side 20 cm ?​

Answer 1

Answer:

Volume of cube with side 20cm= (side)^3

= (20)^3cm^3

=8000cm^3

Volume of cube with side 2cm= (side)^3

= (2)^3cm^3

= 8cm^3

The number of cubes of side 2 cm that can be drawn out a cube of side 20cm can be calculated as:

Number of cubes

= volume of cube of side 20cm / volume of cube of side 2 cm

= 8000cm^3/ 8cm^3

=1000

Thus 1000 cubes of side 2 cm can be drawn out of a cube of side 20cm.

Answer 2

Answer:

Volume of cube with side 20cm= (side)^3

= (20)^3cm^3

=8000cm^3

Volume of cube with side 2cm= (side)^3

= (2)^3cm^3

= 8cm^3

The number of cubes of side 2 cm that can be drawn out a cube of side 20cm can be calculated as:

Number of cubes

= volume of cube of side 20cm / volume of cube of side 2 cm

= 8000cm^3/ 8cm^3

=1000

Thus 1000 cubes of side 2 cm can be drawn out of a cube of side 20cm.