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**razorfever** in a cylindrical tube of radius R and length l, the velocity v of the fluid flowing through the tube depends upon the distance r from the central axis according to:

v(r) = (P / (4nl)) * (R^2 - r^2) , for 0<=r<=R

where P is the pressure difference between the ends of the tube

and n is the fluid viscosity

compare the average velocity with the maximum velocity over 0<=r<=R

the answer i got for average velocity was (PR^2) / (6nl)

and for maximum velocity was (PR^2) / 4nl

can someone verify if these are the correct answers and if not provide details on the correct solution

thanks in advance