Question

The length breadth and height of a cuboidal reservoir is 7m,6m and 15 m respectively . if 8400 litres of water is pumped out from the reservoir find the fall in the the water level of the reservoir

Answer 1

Answer:

0.08 m

Step-by-step explanation:

volume of reservior=l*b*h

= (15*7*6)m cube

=630 m cube

Since 1 litre= 1/1000 m cube. therefore 8400 litre = 8.4 m cube.

A/q

8.4 m cube water is pumped out

so, 630- 8.4= 621.6 m cube water is left in tank.

Now, suppose length be h m.

so, volume

=>7*6*h= 621.6m cube.

=> h= 5.92 m

now new level of water Reservior = 6-5.92= 0.08 metre.

Answer 2

Answer:

answer is in the attached picture

Step-by-step explanation:

hope it helps you