38. 8–10 AM
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(2) 17. height: 9 km. 26. 47 cm2. 18. base: 15 cm. 27. 16 m2. 19. height: 93 m. 28. 120 ft.2. 20. height: 23.4 m. 29. 667 m2. 21. base: 12.5 cm. 30. 127.5 ft.2. 22. 14 cm2. 31. 6,396 yd.2. 23. 81 m2. 32. 150 – x2. 24. 36 cm2. 33. 40 + 12y. 25. 44 m2. 34. 20.5" × 14" rectangle Section 13.1. BJU Press. Unauthorized reproduction prohibited..
(3) 35. 39 rolls. 42. 5 3 9. 36. 6. 43. 3. 37. 25. 44. 25 3. 38. 16%. 45.. 2 3 3. 46.. 5 5 8. 39. 6 40. 12 41. 3 3 4. Section 13.1 BJU Press. Unauthorized reproduction prohibited..
(4) 13.2 Areas of Triangles and Trapezoids. 1. 27 cm2. 10. 72 cm2. 2. 154 m2. 11. 126.5 cm2. 3. 40 cm2. 12. 138 cm2. 4. 259 m2. 13. 243 m2. 5. 48 cm2. 14. 165 cm2. 6. 63 cm2. 15. 90 cm2. 7. 117 cm2. 16. 57 cm2. 8. 1,026 cm2. 17. 72 m2. 9. 45 cm2. 18. 155 cm2. BJU Press. Unauthorized reproduction prohibited..
(5) 19. 10 cm. 28. 2.4 cm. 20. 8 m. 29. 60 in.2. 21. 7.5 m. 30. 13 in.. 3 8. 3 13. in. ≈ 9.23 in.. 22. 1 ft.. 31. 9. 23. 8 in.. 32. 3 cm2. 24. 6 m. 33. 6 cm2. 25. 12 m. 34. 7 cm2. 26. 15 yd.. 35. 6 cm2. 27. 6 cm2. 36. 9 cm2 Section 13.2. BJU Press. Unauthorized reproduction prohibited..
(6) 37. 12 cm2. 43. 7.1; 5 2. 38. 8–10 AM. 44. 3.5; 2 3. 39. 4–6 PM. 45. 31.4 in.. 40. 29°F. 46. 20 m. 41. 74°F. 47. 96 cm. 42. 8.7; 2 19. 48. length: 7 cm, width: 5 cm. Section 13.2 BJU Press. Unauthorized reproduction prohibited..
(7) 13.3 Areas of Circles. 1. 78.5 cm2. 10. 1,519.76 mm2. 2. 50.24 in.2. 11. 18.09 m2. 3. 452.16 ft.2. 12. 109.30 cm2. 4. 254.34 m2. 13. 392.5 cm2. 5. 113.04 in.2. 14. 13.8 m2. 6. 706.5 m2. 15. 61.2 cm2. 7. 2,826 ft.2. 16. 77.0 m2. 8. 226.87 cm2. 17. 80 cm2. 9. 0.28 cm2. 18. 28 cm2. BJU Press. Unauthorized reproduction prohibited..
(8) 19. 82.3 cm2. 28. 13.6 cm2. 20. 42.3 cm2. 29. 30.9 cm2. 21. 10 m. 30. 24 cm. 22. 20 m. 31. 28.26 mi.2. 23. 20p m ≈ 62.8 m. 32. 21" × 61". 24. 5 in.. 33. 65.8 cm × 52.2 cm. 25. 16 m. 34. combination; 126. 26. 8p ft. º 25.1 ft.. 35. permutation; 3,024. 27. 4p ft.2 º 12.6 ft.2. 36. permutation; 657,720 Section 13.3. BJU Press. Unauthorized reproduction prohibited..
(9) 37. combination; 27,405. 41. EFD. 38. x = 4. 42. 9. 39. x = 11. 43. 37°. 40. no real solution. 44. 36. Section 13.3 BJU Press. Unauthorized reproduction prohibited..
(10) 13.4 Lengths and Areas of Similar Regions. 1.. 1 2. 2.. 1 2. 3.. 1 4. 4.. 1 2. 8. 4 : 49 9. 13 : 19 10. 36 : 25 11. 7 : 4 mi. ×. 1 2. 12. 5 : 6 mi.. 13. 2 : 1. 5. 3 ft.; 9 ft.2. 14. 3 : 2. 6. 12 in.; 144 in.2. 15. 3 : 2. 7. 25 : 49. 16. 24 in.. BJU Press. Unauthorized reproduction prohibited..
(11) 17. 24 in.2. 26. 90 mm. 18. 10 in.. 27. quadruples the area; 300%. 19. 5 : 3 2. 20. 60.48 m. 28. multiplies it by 9; 800% 29.. 2. 22. 14.4 m. 30.. 3. 23. 2 : 5. 31. 8 : 1. 24. 25 mm. 32. 27 : 1. 25. 16 mm. 33. 125 : 8. 21. 37.2 m. Section 13.4 BJU Press. Unauthorized reproduction prohibited..
(12) 34.. 1 3. ≈ 0.33. 41. ∠2 or ∠4 42. ∠3 and ∠6. 35.. 2 3. ≈ 0.67. 36.. 1 2. = 0.5. 37.. 1 153. ≈ 0.0065. 38. x = ±6 2 39. x = ±3. 43. Answers will vary; ∠1 and ∠2, ∠3 and ∠2, ∠6 and ∠4, or ∠4 and ∠7 44. Answers will vary; ∠1 and ∠6, ∠2 and ∠4, or ∠3 and ∠7 45. ∠5 and ∠3 or ∠5 and ∠6. 40. x = ±12 Section 13.4 BJU Press. Unauthorized reproduction prohibited..
(13) 13.5 Surface Areas of Prisms and Cylinders. 1. 150 in.2. 10. 408 m2. 2. 337.5 ft.2. 11. 2 in.. 3. 86,400 cm2. 12. 4 in.. 4. 37.5 m2. 13. 10 cm. 5. 384 cm2. 14. 210 units2. 6. 110 m2. 15. 75 units2. 7. 617.6 cm2. 16. 344 units2. 8. 88 m2. 17. 300 units2. 9. 265 m2. 18. 276.3 cm2. BJU Press. Unauthorized reproduction prohibited..
(14) 19. 715.9 m2. 28. 167 in.2. 20. 596.6 cm2. 29. 90.4 ft.2; ≈ 4.4 columns. 21. 358.0 m2. 30. when the radius is equal to the height. 22. 125.6 m2 2. 23. 979.7 cm 2. 24. 245 cm. 25. 252 in.2. 31. 128 in. 32. rectangular stock 46. 3 8. in. × 24 in.. 26. 37.7 in.2 27. 25,000 ft.2 (ceiling and floor are not glass) Section 13.5 BJU Press. Unauthorized reproduction prohibited..
(15) 33. 36. 38. a = 3. 34. 88. 39. c = 34. 35. 80. 40. b = 8. 36. 126. 41. n = 2; h = 2 2. 37. 180. 42. s = 3; g = 3 3. Section 13.5 BJU Press. Unauthorized reproduction prohibited..
(16) 13.6 Surface Areas of Pyramids, Cones, and Spheres. Lateral Surface Area. Total Surface Area. Prism. 1. L = pH. 2. S = L + 2B. Circular Cylinder. 3. L = 2πrH. 4. S = 2πrH + 2πr2. 1 pl 2. Regular Pyramid. 5. L =. Circular Cone. 7. L = πrl. Sphere. BJU Press. Unauthorized reproduction prohibited.. Not applicable. 6. S = L + B 8. S = πrl + πr2 9. S = 4πr2.
(17) 10. 60 m2. 16. 615 cm2. 11. 36 m2. 17. 109 cm2. 12. 96 m2 13. 50π ft.2 º 157 ft.2 14. 25π ft.2 º 78.5 ft.2 15. 75π ft.2 º 235.5 ft.2. Section 13.6 BJU Press. Unauthorized reproduction prohibited..
(18) 18. 399 cm2. 19. 88 cm2. Section 13.6 BJU Press. Unauthorized reproduction prohibited..
(19) 20. L = 36 ft.2; S = 58 ft.2. 24. 139.6 ft.2. 21. L = 84 m2; S = 133 m2 22. L = 252 cm2; S = 336 cm2 23. 99.84 in.2. 25. L = 50π cm2 ≈ 157 cm2; S = 75π cm2 ≈ 235.5 cm2 26. L = 24π in.2 ≈ 75.4 in.2; S = 33π in.2 ≈ 103.62 in.2. Section 13.6 BJU Press. Unauthorized reproduction prohibited..
(20) 27. 30π cm2 º 94.2 cm2. 29. 20π in.2 º 62.8 in.2 30. 64π m2 º 201 m2 31. 2,304π cm2 º 7,235 cm2 32. 36π ft.2 º 113 ft.2 33. 144π ft.2 º 452 ft.2. 28. 192π m2 º 602.9 m2. 34. 80,000 yd.2. Section 13.6 BJU Press. Unauthorized reproduction prohibited..
(21) 35.. 36. s = 2l; no 37. 1,112 cm2; 40.8 cm × 37 cm 38. cardboard: 283 cm2; aluminum: 157 cm2 39. 3 3 40. 42 10 41. −2 2 L = 2(st + sb)lh + 2stlt. 42.. 3. 3. Section 13.6 BJU Press. Unauthorized reproduction prohibited..
(22) 43.. 6 5. 46. 1,440°. 44. obtuse. 47. 144°. 45. isosceles. 48. square. Section 13.6 BJU Press. Unauthorized reproduction prohibited..
(23) Problem Solving 13—Multiple Strategies. 1. 792; 1″ along length only; this method 2. $9,179.89 3. $38 admission fee; $5 bus fee; $43 total 4. 240 gifts; $2,400. BJU Press. Unauthorized reproduction prohibited.. 5. initial: 56°; final: 112° 6. 16 houses 7. 38 mi./hr. 8. bottom: 14 cans; 14 rows; 70 in. high.
(24) 13.7 Volumes of Prisms and Cylinders. 1. 64 cm3. 10. 4,245 cm3. 2. 540 m3. 11. 8,817 m3. 3 306.15 m3. 12. 470 cm3. 4. 135 cm3. 13. 1,356 in.3. 5. 1,632 m3. 14. 6 m. 6. 350.4 m3. 15. 13 cm. 7. 1,846 cm3. 16. 102 cm2. 8. 122 m3. 17. 8 m. 9. 531 cm3. 18. 2.5 m. BJU Press. Unauthorized reproduction prohibited..
(25) 19. 19.6 m2. 28. V = 2πr3. 20. 12.5 m. 29. 64 in.3. 21. 2 cm 22. 12 m. 30. x = height, 8 – 2x = width, and 12 – 2x = length. 23. 12 m. 31. e = 6 units. 24. 5 ft.. 32. 5.4 cm. 25. V = e3. 33. 7.065 m2. 26. 27 ft3 = 1 yd.3. 34. 50 ft.3; 3.5 tn.; $105. 27. 1,000 cm3 = 1 L. 35. 84.8 in.3; about 1.5 qt. Section 13.7. BJU Press. Unauthorized reproduction prohibited..
(26) 36. about 49.6 gal.; 50 gal.. 43. 15, 4.5. 37. diameter = 20"; height = 5' 1". 44. 81. 38. 15.5 ft.3 39. 2,500,000 L 40. 86.8 m × 86.8 m × 1 m 41. 75, 78, 81, 82.5, 90 42.. 45. 82 46. 7 47. 10 48. (–0.5, 5) 49. (4, 6) 50. (2, –1); AM = MB = 3 2. Section 13.7 BJU Press. Unauthorized reproduction prohibited..
(27) 13.8 Volumes of Pyramids, Cones, and Spheres. 1. 147 cm3. 10. 33.5 m3. 2. 56 m3. 11. 707.5 in.3. 3. 105 cm3. 12. 333.4 cm3. 4. 88.7 m3. 13. 382 m3. 5. 3,383.3 cm3. 14. 1,150 ft.3. 6. 12.7 m3. 15. 4,187 in.3. 7. 150.72 cm3. 16.. 8. 527.52 cm3 9. 314 m3 BJU Press. Unauthorized reproduction prohibited.. 32 π 3. cm3. 17. 36π m3.
(28) 18.. 256 π 3. ft.3. 19. 288π in.3 20. 24 21. 13 22. 5 23. 17π 24. V = 121.5π; r = 4.5 25. r = 3, d = 6 26. r = 9, d = 18. 27. V = 288π; d = 12 28. 100π cm3 29. 13 cm 30. 90π cm2 31. 12 in. 32. 10 in. 33. 384 in.2 4 3. 34. V = π r 3 35. a3 : b3 Section 13.8. BJU Press. Unauthorized reproduction prohibited..
(29) 36. 128,271 gal.. 45. –4. 37. 3,595 bu.. 46. 6a – 4. 38. 30,000 gal.; depth ≥ 2.24'. 47. line, rotational. 39. 45,000 gal.; depth ≥ 11.4'. 48. a segment with endpoints (2, –7) and (5, –4). 40. 12 41. 492,804. 49. 180°. 42. 35 43. –16 44. 68 Section 13.8 BJU Press. Unauthorized reproduction prohibited..
(30) Math and Scripture 13. 1. 450 ft. long × 75 ft. wide × 45 ft. high 2. 1,518,750 ft.3 3. 7,036,875 lbs. º 3,518 tn. 4. ≈ 4.309 tn. 5. slightly smaller. BJU Press. Unauthorized reproduction prohibited.. 6. Make rooms; cover it with pitch inside and out; make a window at the top and a door in the side; make 3 decks (or stories) 7. He believed and trusted God. 8. Answers will vary..
(31) Chapter 13 Review. 1. 324 cm2. 10. A = 60 units2. 2. 48.51 m2. 11. h = 4 units. 3. 161 cm2. 12. A = 12 in.2. 4. 156 m2. 13. h = 5 units. 5. 452.2 cm2. 14. A = 40 in.2. 6. 63.6 m2. 15. A = 153.9 units2. 7. A = 21 in.2. 16. h = 16 units. 8. b = 24 units. 17. 32 cm2. 9. A = 257 units2. 18. 24 cm2. BJU Press. Unauthorized reproduction prohibited..
(32) 19. 66 cm2. 28. 7 in.. 20. 51 m2. 29. S = 294 cm2; V = 343 cm3. 21. 84.8 cm2 22. 13.8 m2 23. p = 51 units 24. A = 16 units 2 25. 776 acres 26. square pizza; 1.7 in.2 larger. 30. S = 132 cm2; V = 80 cm3 31. S = 88π m2 º 276.3 m2; V = 112π m3º 351.7 m3 32. S = 279 mm2; V = 120 mm3 33. S = 96 cm2; V = 48 cm3. 27. perimeter 2 : 1; area 4 : 1 Chapter 13 Review BJU Press. Unauthorized reproduction prohibited..
(33) 34. S = 90π mm2 º 282.6 mm2; V = 100π mm3 º 314 mm3 35. 192 in.3 36. 12 cm. 37. 80π cm3 º 251.2 cm3 38. Noah used his mathematical skills to obey God’s detailed instructions for building the ark.. Chapter 13 Review BJU Press. Unauthorized reproduction prohibited..
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