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**If the average volume flow of blood through the aorta is 9 × 10-5 m^3/s and the cross-sectional area of the aorta is 3.1 × 10-4 m^2, what is the average speed of blood in the aorta in cm/s?**

Looking through my lecture notes I do not see any equations relating volume of a liquid/area/velocity. How would I begin to work out a simple problem such as this?