Use Poiseuille's Law to calculate the rate of flow in a small human artery where we can take η = 0.027, R = 0.008 cm, l = 2 cm, and P = 5000 dynes/cm2. (Round your answer to three significant figures.)

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Write the equation in logarithmic form 8^x=64

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.