Question

please solve 8th question.

Answer 1

hey mate here's ur answer

length of water tank = 7m

breadth of tank = 6m

height of tank = 15m

so, volume of tank = l x b x h

= 7*6*15 = 630 m³

we know that

1 m³ = 1000 l

so, 630 m³ = 1000*630 = 630000 l

water pumped out of tank = 8400 l

water remaining in tank = 630000 - 8400 = 621600 l

Answer 2

Answer:

0.2m

Step-by-step explanation:

Length of a cuboidal tank = 7 m.

Breadth of a cuboidal tank = 6 m.

Height of a cuboidal tank = 15 m.

Volume of cuboidal tank = 7 * 6 * 15

                                         = 630 m³.

Now,

Volume of water = 8400 Litres = 8.4 m³.

Area of water tank = length * breadth

                               = 7 * 6

                               = 42 m².

∴ Depth of water level = 8.4/42

                                     = 0.2m.

Therefore, the fall of water level in the water tank = 0.2m.

Hope this helps!