Question

solve.
a red blood cell has a diameter of approximately 6.5 x 10^{-3} mm. the width of a human hair is about 0.018 mm. which is wider (thicker)?

Explanation:

Step1: Convert scientific notation to decimal

The diameter of the red blood cell is \(6.5\times10^{-3}\) mm. Using the rule of scientific notation, \(10^{-3}=\frac{1}{1000} = 0.001\), so \(6.5\times10^{-3}=6.5\times0.001 = 0.0065\) mm.

Step2: Compare the two values

We have the diameter of the red blood cell as \(0.0065\) mm and the width of the human hair as \(0.018\) mm. Since \(0.018>0.0065\), we can compare these two decimal numbers.

Answer:

The human hair is wider (thicker) than the red blood cell.