Monday, November 19, 2012

Textbook: Chapter 2.4 page 80 Question 25

25.) What is the length of the longest line segment you can draw on a sheet of paper that is 27.9 by 21.6? Express your answer to the nearest tenth of a centimeter.

1.) First you would need to square both the numbers.

27.9 cm² = 778.41

21.6 cm² = 466.56

2.) Add them together.


778.41 cm² + 466.56 cm² = 1,244.97

3.) Find the square root of 1,244.97


1,244.97 = 35.28 cm

4.) Round to the nearest tenth of a centimeter.

35.28 cm rounded to the nearest centimeter would be 35.3 cm.


The length of the longest line segment would be 35.3 cm.



1 comment: