Please refer to the word document attached in my reply post below.
I think that the part of the solution that says 'The tank volume is v = (pi/6)*D^3 = (...) 0.00654 m^3.' is wrong.
I tried to calculate the volume using the given formula (v = (pi/6)*D^3) and got 0.0654 as the answer, instead of 0.00654.
So, I think that the final answer (1.3 s) is also wrong.
Does anyone agree with me? Or am I missing something?
Thanks for help!