When magnified 1,000 times by an electron microscope, the image of a certain circular piece of tissue has a diameter of 5 centimeter. The actual diameter of the tissue, in centimeters, is
Pick:  A) 0.005  B) 0.002  C) 0.001  D) 0.0005  E) 0.0002
It is very easy if x is the diameter, then the magnified length is 1000x.   ince 1000x=5 then x=5/1000=0.005.   The answer is 0.005
<result>A</result>
When magnified 1,000 times by an electron microscope, the image of a certain circular piece of tissue has a diameter of 5 centimeter. The actual diameter of the tissue, in centimeters, is