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## Homework Statement

Water flows into a cubical tank at a rate of 19 L/s. If the top surface of the water in the tank is rising by 3.7 cm every second, what is the length of each side of the tank?

## Homework Equations

v=L^3

## The Attempt at a Solution

so what I started doing was

dV/ds = 3l^2 dl/ds

changed 19 L/sec into cm^3 which is 19000

19000 = 3l^2(3.7)

19000 = 11.1l^2

divided both sides by 11.1

1711.71 = l^2

then took the square root of both sides to get

41.37 cm

however when i put in the answer for my homework, it says the answer is wrong, i have 10 tries, so i was wondering what am i doing wrong or what is the right way to do this problem