Question

4. A cube has an edge measuring 2 cm. Find the
number of cubes of edge 3 cm that can be cut.​

Answer 1

Explanation:

Answer for first question is

The volume of big cube=8*8*8=512

Volume of small cube=2*2*2=8

Volume of big cube/volume of small cube =number of small cubes so.

512/8=64

So 64 cubes made from big cube

Answer for 3rd question..

1m=100cm

2m=200cm

Volume of cubiod=200*80*40= 640000cm3

Volume of cube= 20*20*20=8000cm3

Divide volume if cubiod/volume of cube=num of cubes

640000/8000=80 cubes

So 80 cubes are made from cubiod

Answer for fourth question

Let edge of cube = a

Volume of cube=a3

If side is doubled then side=2a

Volume with new side=8a3

So the volume became 8 times

Surface area =6*a2

New surface area =6*2a2

So surface area became 4 times

Answer 2

Answer:

volume of large cube and small cube.