Question

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.

Answer 1

Answer:

The  cross-sectional  area is $A = 7.59 *10^{-11} \ m^2$

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 = $6.9*10^{-6} \ m \ by\ 1.1*10^{-5} \ m$

   Generally the cross-sectional area is mathematically represented  as

    $A = 6.9*10^{-6} * 1.1*10^{-5}$

=>   $A = 7.59 *10^{-11} \ m^2$