Apps. and Interpretation for IBDP Maths Ebook 1 | Page 377

Answers
43.4 (a) AC � 12 cm
(b) AB � 112 cm
(c) 37.4 cm
Exercise 44
44.1 (a) 197 cm
(b) 307 cm
(c) 5410 cm 2
44.2 (a) 59.0 cm
(b) 190 cm 2
44.3 (a) 63.0
(b) 192 cm 2
44.4 (a) 3.74 cm
(b) 30.0 cm 2
Exercise 45
45.1 (a)
(b)
(c)
2
19400 cm
2
4810 cm
2
14600 cm
45.2 (a) 2430 cm
(b) 2240 cm
(c) 4670 cm
45.3 (a) AOB ˆ � 106
(b)
(c)
2
371cm
2
179 cm
45.4 (a) AOB ˆ � 97.2
(b)
(c)
Exercise 46
2
67.8 cm
243 cm
46.1 (a) 257
(b) (i) AEC ˆ � 26
(ii) AE � 1780 km
(c) DE � 1400 km
(d) (i) BE � 1380 km
(ii) 61.2 km/h
46.2 (a) AC � 16.6 km
(b)
(c)
2
98.2 km
(i)
2
196 km
(ii) BC � 28.5 km
(d) (i) DC � 13.9 km
(ii) BD � 36.5 km
(iii) 1.28 hours
46.3 (a) AC � 44.9 km
(b)
2
1020 km
(c) � � 54.9
(d) Speed of Q � 47.0 km/h
46.4 (a) BD � 52.4 km
(b)
2
1830 km
(c) � � 104
(d) 2 hours 33 minutes
Exercise 47
47.1 (a) ACB ˆ � 47.
9
(b) (i) BAC ˆ � 60.6
(ii) BC � 24.4 km
(c) (i) 238
(ii)
2
408 cm
47.2 (a) AC � 35.2 cm
(b) BC � 39.8 cm
(c) (i) BOC ˆ � 120
(ii)
(iii)
2
553 cm
2
324 cm
47.3 (a) AC � 19.7 cm
(b) OC � 26.8 cm
(c)
2
52.7 cm
47.4 (a) ACB ˆ � 32.
1
(b) OC � 52.5 cm
(c) 102 cm
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