Analysis and Approaches for IBDP Maths Ebook 1 | Page 319

Exercise 40
40.1 (a) 8.13 cm
(b) 3.38 cm
40.2 (a) 21.9 cm
(b) 230 cm 2
40.3 (a) 68.7 cm
(b) 55.4 cm
40.4 (a) 70.7
(b) 53.8 cm
Exercise 41
41.1 (a) 197 cm
(b) 307 cm
(c) 5420 cm 2
41.2 (a) 59 cm
(b) 190 cm 2
41.3 (a) 1.1
(b) 192 cm 2
41.4 (a) 3.74 cm
(b) 30.0 cm 2
Exercise 42
42.1 (a) 19375 cm 2
(b) 4800 cm 2
(c) 14600 cm 2
42.2 (a) 2436 cm
(b) 2240 cm
(c) 4680 cm
42.3 179 cm 2
42.4 243 cm
Exercise 43
43.1 (a) 257
(b) 1780 km
(c) 1400 km
(d) 61.2 km/h
43.2 (a) 16.6 km
(b) 98.2 km 2
(c) 28.5 km
(d) 1.28 hours
43.3 (a) 44.9 km
(b) 1020 km 2
(c) 54.9
(d) 47.0 km/h
43.4 (a) 52.4 km
(b) 1830 km 2
(c) 104
(d) 2 hours 33 minutes
Exercise 44
44.1 (a) 0.836
(b) 24.4 cm
(c) 409 cm 2
44.2 (a) 35.2 cm
(b) 39.9 cm
(c) 326 cm 2
44.3 (a) 19.6 cm
(b) 26.7 cm
(c) 52.2 cm 2
44.4 (a) 0.560
(b) 52.5 cm
(c) 102 cm
Chapter 12
Exercise 45
45.1 (a) 3 cm
(b) 12�
cm
(c)
2
75.4 cm
45.2 (a) 3.43 cm
(b)
3
84.7 cm
(c)
2
111cm
45.3 (a) 3.32 cm
(b) 13.4 cm
(c)
2
140 cm
45.4 (a) 9 cm
(b) 40 cm
(c) 1080�
cm
3
3
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