Question

Although human cells vary in size, the volume of a typical cell is equivalent to the volume of a sphere that has an approximately 10−5 m radius. Estimate the number of cells in a human body. =

Answer 1

Answer:

12 TRILLION CELLS....ESTIMATED

the radius of an average typical cell is 10-5 micrometer

so the volume would be 4/3 pie r square

5200 micrometer cube

which would be 5.2 × 10^3 micrometer cube

=5.2×10^3×10^-12 cubic centimeter

=5.2× 10^-9 cubic centimeter

volume of an average human = 62000 cubic centimeters

so estimated cells= total volume of body/volume of an average sized cell

=62000/5.2×10^-9

=62000000000000/5.2

=11,923,076,923,076 cells

=12 trillion cells approx

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