Solutions For 9780131905429 Chapter 1 Problem 26A

Ruler is a scientific tool used to measure the dimensions of the objects. It contains many small and big markings. Such markings divide the ruler into several compartments and help us to easily understand the precise measurement.

Take a ruler that is 30 long. It contains 30 big markings that divide the ruler into 30 compartments. Each marking depicts 1. One centimeter is again divided into 10 small markings called millimeters. A 30 long ruler contains 300 (millimeters).

Place the ruler along the vertical length of the text book and note down the length of the book in the millimeters. This can be done by counting the millimeters markings crossed by the book. It will come to around 29. Now place the ruler along horizontal side of the book and measure the width. This will come to around 20