Question

(
... Find the unknown weight to balance each scale.
Each pencil = 3 cubes
? cubes
ta से
cubes.
Weight of the pen =​

Answer 1

Answer:

Volume of cube = Side

3

In this case, side =3 cm

Let us assume side as a

∴ volume of cube =a

3

If side increases by 4 (in our case new side is 12 which is 4 times 3),

then volume of cube with new side as 12 cm =64a

3

i.e., Volume increase by 64 times.

∴ volume of side 12 cm = 64 × Volume of side 3 cm

i.e., Mass of side 12 cm = 64 × Mass of side 3 cm (Because cubes are similar)

∴ the weight of a similar cube of iron whose edge is 12 cm =64×3

3

=768 g