Question

Suppose a man's scalp hair grows at a rate of 0.49 mm per day. What is this growth rate in feet per century?

Answer 1

Answer:

58.703 ft/centuri

Explanation:

Length of the hair grow, l = 0.49 mm

Time to grow, t = 1 day

Convert mm into feet.

We know that, 1 mm = 0.00328 feet

So, 0.49 mm = 0.49 x 0.00328 = 0.0016072 ft

Convert day into century.

We know that, 1 century = 36525 days

So, 1 day = 1 / 36525 centuri

growth rate of hair =  $\frac{0.0016072}{\frac{1}{36525}}$

                               = 58.703 ft/centuri