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## Homework Statement

"A cylindrical tank is buried beneath a lake in order to safely store radioactive waste. Inside the tank is a measuring rod that identifies the level of radioactive waste.

Determine the points on the measuring rod that would identify when the tank is 1/4 , 1/2 and 3/4 full.

Assume the diameter of the cylinder is 1m and the cylinder is 5m long.

## Homework Equations

## The Attempt at a Solution

Not sure where to start really, or where to go.

Started with:

partial circle = 1/2 * r2 * (3.14 * theta/180)-sin theta

Not sure where to go with this using integration to solve.

HELP, please