1. (a) 17.8 (b) 47.9°
2. (a) 6.58 (b) 56.3°
3. (a) 34.4 cm2 (b) 34.4 mm2
4. (a) 6.52 (b) 3.43
5. (a) 87.3° (b) 2.90°
6. (a) 10.3 (to 3 sig. figs.), 86.2o, 42.8o
(b) 23.7o, 25.9o, 130.4o
7. (a) 13.3 cm2 (b) 9.12 cm
8. The tramper has walked 429 metres at a speed of 5.15 km/h.
9. The four angles in the rhombus are 46.4°, 133.6°, 46.4°, 133.6°
10. Area of the equilateral triangle is 173 cm2
11. Area of field is 3790 m2