A storage tank is in the form of a cube. When it is full of water, the volume of water is 15.625 m3. If the present depth of water is 1.3 m, find the volume of water already used from the tank.

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

5500 litres

6500 litres

4500 litres

7500 litres

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

It is given volume of water= 15.625 m3 and present depth of water=1.3 m.
The volume of the cube whose edge is x is given by,

V = x 3

volume of the tank is 15.625 m

3

which implies,

x 3 =

15.625

x = 1562510003

x = 2531033

x = 2.5

m
Present depth of water is 1.3 m, so the depth of water used will be

2.5 − 1.3 = 1.2 m

So, the volume of the used water,

V = l × b × h

V = 2.5 × 2.5 × 1.2

V = 7.5

3

We know,
1 m

3

=1000 litres

V = 7.5 × 1000

litres

V = 7500

litres
Hence, the amount of water used is 7500 litres.
Therefore, the correct option is 3.

Watch 3-min video & get full concept clarity