A water storage tank has the shape of a cylinder with diameter 14 ft. It is mounted so that the circular cross-sections are vertical. If the depth of the water is 12 ft, what percentage of the total capacity is being used

"85.7%" is the right answer.

Step-by-step explanation:

According to the question,

The total capacity of water tank will be:

⇒

The total volume of water will be:

⇒

Now,

The percentage of total capacity will be:

=

=

By putting the values, we get

=

= %

the answer is 13 cm