Question

A farmer has a water tank for cows in the shape of a cylinder with radius of 7 ft and a

Answer 1

Answer:

92.36 ft³

Step-by-step explanation:

The volume of a cylinder is given by the following expression:

$V=h*\pi r^2$

Where "h" is the height of the cylinder and "r" is the radius of the base.

The full volume of the cylindrical tank is:

$V=3*\pi*7^2\\V=461.81\ ft^3$

The sensor turns on when the volume reaches 20% of the total volume, the volume of the tank when the sensor turns on is:

$S=0.20*V\\S=0.20*461.81\\S=92.36\ ft^3$

The volume is 92.36 ft³.