Page 359 - Basic College Mathematics with Early Integers

Vocabulary and Readiness Check

Use the choices below to fill in each blank. Some choices may be used more than once.

squaring Pythagorean theorem radical leg
hypotenuse perfect squares 10
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1. 2100 = because 10 10 = 100 .
2. The sign is used to denote the positive square root of a number.
3. The reverse process of a number is finding a square root of a number.
1
4. The numbers 9, 1, and are called .
25

5. Label the parts of the right triangle.

6. The can be used for right triangles.

4.6 Exercise Set FOR EXTRA HELP

Objective Find each square root. See Examples 1 through 3.

1. 24 2. 29 3. 2121 4. 2144

1 1 16 36
5. 6. 7. 8.
A81 A64 A64 A81

Objective Use Appendix A.6 or a calculator to approximate each square root. Round the square root to the nearest
thousandth. See Example 4.

9. 23 10. 25 11. 215 12. 217

13. 247 14. 285 15. 226 16. 235

Determine what two whole numbers each square root is between without using a calculator or table.Then use a
calculator or Appendix A.6 to check. See Example 5.

17. 238 18. 227 19. 2101 20. 285

Copyright 2012 Pearson Education, Inc.
Objectives Mixed Practice Find each square root. If necessary, round the square root to the nearest
thousandth. See Examples 1 through 5.

21. 2256 22. 2625 23. 292 24. 218

49 121
25. 26. 27. 271 28. 262
A144 A169
336