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Secure https://session.masteringphysic ProblemID 72079747 s.com/myct/itemview?assignment PHYS 215 SPRING 2017 signed in as Rafael De La Torre Exercise 1.13 PHYS 215 Week 00 previous l 3 of 6 l nex V 12 cm3 Exercise 1.13 ss you Submit My Answers Give up Bacteria vary somewhat in size, but a diameter of ert Ar 1.4 um is not unusual Correct Part B What would be the surface area (in square milimeters) of such a bacterium, assuming that t is spherical? Express your answer using two significant figures. mm Answers up Submit M Incorrect: Try Again: 6 attempts remaining Provide Feedback Continue sk me anything

Explanation / Answer

6.157*10^-12 m^2....

If it is assumed to be spherical, then surface area is given by

A=4*r^2 , r = radius = diameter/2.But diameter = 1.4 *10 ^ -6 m.

So radius will be , r= 0.7 *10^-6 m.

Therefore, A = 4* (0.7*10^-6)^2

A= 6.157*10^-12 m^2.......

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