Question

a tank with two identical metal cubes in it was filled with water to the brim. when the cubes are removed the water level dropped to 80% of its height. the edge of one cube is​

Answer 1

Answer:

Volume of tank=20×10×25=5000cm

3

Drop in water level=20% of volume of brim

Volume of cube = Volume of water dropped in brim

=20% of 5000cm

3

=

100

20

×5000

=1000cm

3

Let edge of cube be

′

a

′

cm.

Volume of cube=a

3

⇒a

3

=1000

a=

3

1000

=10cm