Chapter 4.5, Problem 27IP

To determine

To find : about how many times diameter of marsis greaterthan the diameter of tennis ball.

Answer to Problem 27IP

Thediameter of mars is greater than the diameter of tennis ball by $1.75\times {10}^8$ meter.

Explanation of Solution

Given information :

The diameter of mars is $7\times {10}^6$ metres and tennis ball diameter is about $0.04$ metre.

Calculation :

The diameter of tennis ball in scientific notation is

  $\begin{array}{l}\text{0}\text{.04}\\ \text{4}\text{.0}\times {\text{10}}^{-2}\text{ meter}\end{array}$

Therefore,diameter of mars is greater than tennis ball by

  $\begin{array}{l}\frac{7\times {10}^6}{\text{4}\text{.0}\times {\text{10}}^{-2}}\\ \frac{7}{4}\times \frac{{10}^6}{{10}^{-2}}\\ 1.75\times {10}^8\text{ meter}\end{array}$

Hence, the diameter of mars is greater than the diameter of tennis ball by $1.75\times {10}^8$ meter.