Chapter 5, Problem 97A

Interpretation Introduction

Interpretation:

To convert the number in dm.

Concept Introduction :

Convert 1 cm into m.

  $\text{1 cm = 1}\times {\text{10}}^{-2}\text{m}$

And convert 1 dm into m.

  $\text{1 dm = 1}\times {\text{10}}^{-1}\text{m}$

Answer to Problem 97A

Option (a)

Explanation of Solution

  $\begin{array}{c}\text{10 cm = 10}\times {\text{10}}^{-2}\text{m}\\ \text{= 10}\times {\text{10}}^{-2}\text{m}\times \frac{1\text{dm}}{\text{1}\times {\text{10}}^{-1}\text{m}}\\ =1\text{dm}\end{array}$

The option (a) is correct.