Chapter 6.4, Problem 25SR

To determine

To complete: given conversion.

Answer to Problem 25SR

4 inches is approximately 10.15 centimetres.

Explanation of Solution

Given information:

The given conversion is

  $4\text{in}\text{.}\approx \text{cm}$ .

Calculation:

Covert 4 inches into centimetres is as follows:

Use $1\text{cm}\approx \text{0}\text{.394}\text{in}\text{.}$

  $\begin{array}{c}4\text{in}\approx \text{4}\text{in}·\frac{1\text{cm}}{0.394\text{in}}\text{Multiply}\text{by}\frac{1\text{cm}}{0.394\text{in}}\\ \approx 4\cancel{\text{in}}·\frac{1\text{cm}}{0.394\cancel{\text{in}}}\text{Divide}\text{out}\text{common}\text{units,}\text{leaving}\text{the}\text{desired}\text{unit,cm}\text{.}\\ \approx \frac{4\text{cm}}{0.394}\text{or}\text{10}\text{.15}\text{cm}\end{array}$

Therefore, 4 inches is approximately 10.15 centimetres.