[R] Calculating with tolerances

[Jan private]

Dear list,

I am from an engineering background, accustomed to work with tolerances.

For example, I have measured

Q = 0.15 +- 0.01 m^3/s
H = 10 +- 0.1 m

and now I want to calculate

P = 5 * Q * H 

and get a value with a tolerance +-

What is the elegant way of doing this in R?

Thank you,
	Jan