A tissue cross-section viewed on a microscope slide shows a cell of almost rectangular shape with dimensions 6.9 × 10-4 cm by 1.1 × 10-3 cm. Calculate the cross-sectional area of the cell. Express the area in powers of ten notation and use the appropriate number of significant digits for the number multiplying the power of 10.

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Answer:

The  cross-sectional  area is [tex]A = 7.59 *10^{-11} \  m^2[/tex]

Explanation:

From the question we are told that

   The dimension of the cell is    6.9 × 10-4 cm by 1.1 × 10-3 cm = [tex]6.9*10^{-6} \ m \ by\  1.1*10^{-5} \  m[/tex]

   Generally the cross-sectional area is mathematically represented  as

    [tex]A  =  6.9*10^{-6}   *  1.1*10^{-5}[/tex]

=>   [tex]A = 7.59 *10^{-11} \  m^2[/tex]