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Answer:
cell A = 6×10^-6
cell B = 0.0000002 = 2×10^-7
ratio = (6×10-6)/(2×10^-7)
ratio = 3×10 = 30 m
Yes, it's easy to find cause you have to divide 6 by to, and after do the operations with the power of 10. If it wasn't in scientific notation, you would have to do a lot of calculations with lots of zeros and it would be very hard