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[SOLVED] rate of change in cone

karush

Well-known member
Jan 31, 2012
2,723
View attachment 1556

if correct? wasn't sure if $$\pi$$ should be in answer since answer is in$$\frac{\text{in}^3}{min}$$
 

MarkFL

Administrator
Staff member
Feb 24, 2012
13,775
Looks perfect...since $\pi$ is a dimensionless constant, it does not affect your units. Personally, unless asked for a decimal approximation, I would leave the answers in terms of $\pi$. :D