1 problem needed to be solved?

Question

A human tissue cell has a diameter of the order 1.0 micrometer. Assuming each cell occupies a cube of 1.0 micrometer on one side; estimate the number of cells in .5 cubic centimeter of tissue

Please explain, im noob hehe.

Answer 1

volume occupied by one cell 1*µm^3

1cm = 10^4 µm 1cm^3 = 10^12 µm^3

and .5 cm^3 = 0.5 10^12 = 5 10^11µm^3

So, you can pack 5 10^11 cells