Question

A cylindrical tank with a​ cross-sectional area of 441 cm squared is filled to a depth of 441 cm with water. At tequals​0, a drain in the bottom of the tank with an area of 21 cm squared is​ opened, allowing water to flow out of the tank. The depth of water in the tank at time tgreater than or equals0 is ​d(t)equals(21 minus 1.1 t )squared.

At what time is the tank empty?

Answer 1

8300 :) hope this helped a lot