Question

The level of water in measuring cylinder is 12.5mL. A stone of mass 50gm is lowered into it the water level rises up to 21mL. Find the volume of the stone and density.

Answer 1

Explanation:

Let the level of water in the pond rises by 21 cm in t hours.

Speed of water = 15 km/hr

Volume of water flowing out of the pipe in 1 hour

= π r2h

= 231 m3

∴ Volume of water flowing out of the pipe in t hours = 231 t m3.

Volume of water in the cuboidal pond

= 462 m3

Volume of water flowing out of the pipe in t hours = Volume of water in the cuboidal pond

∴ 231 t = 462

Thus, the water in the pond rise by 21 cm in 2 hours.

Answer 2

Answer:

Refers to the attachment