Answer:
Option 2 is correct.
Step-by-step explanation:
We have been given diameter of the tank 9 ft and height of the cylindrical water tank 12 ft
Radius is half of diameter that is 9/2=4.5
Since, water surface is 2 ft from the top
New height will become 12-2=10 ft
We have to find how much water tank contains means the capacity of tank to contain water
We will find volume of the cylindrical water tank by using formula:
[tex]volume=\pi\cdot r^2\cdot h[/tex]
On substituting the values r=4.5,h=10 and[tex]\pi=3.14[/tex]we get
[tex]volume=3.14\cdot (4.5)^2\cdot 10[/tex]
[tex]\Rightarrow volume=3.14\20.25\cdot 10[/tex]
[tex]\Rightarrow volume=635.85=636 ft^3[/tex]
Therefore,Option 2 is correct.
