Exercises 2.4, page 70

1. $18 °$ $18 °$
3. $p = 11.6 in ., A = {8.30 in.}^{2}$ $p = 11.6 in ., A = {8.30 in.}^{2}$
5.
1. AD
2. AF
7.
1. $A F ⊥ O E$ $A F ⊥ O E$
2. $Δ O E C$ $Δ O E C$
9. 1730 ft
11. 72.6 mm
13. ${0.0285 yd}^{2}$ ${0.0285 yd}^{2}$
15. ${4.26 m}^{2}$ ${4.26 m}^{2}$
17. ${128 cm}^{2}$ ${128 cm}^{2}$
19. $25 °$ $25 °$
21. $25 °$ $25 °$
23. $120 °$ $120 °$
25. $40 °$ $40 °$
27. 0.393 rad
29. 2.185 rad
31. $p = \frac{1}{2} π r + 2 r$ $p = \frac{1}{2} π r + 2 r$
33. $p = \sqrt{2 r^{2}} + \frac{1}{2} π r$ $p = \sqrt{2 r^{2}} + \frac{1}{2} π r$
35. All are on the same diameter.
37. ${10.3 in.}^{2}$ ${10.3 in.}^{2}$
39. $π$ $π$ is the ratio of circumference to diameter.
41. $A = \frac{1}{4} π r^{2} - \frac{1}{2} r^{2}$ $A = \frac{1}{4} π r^{2} - \frac{1}{2} r^{2}$
43. 383 km
45. No
47. 24,900 mi
49. $\frac{4}{9}$ $\frac{4}{9}$
51. 35.7 in.
53. 7/9
55. 73.8 in.
57. Horizontally and opposite to original direction

..................Content has been hidden....................

You can't read the all page of ebook, please click here login for view all page.

Table of Contents for Exercises 2.4, page 70