Teacher's Guide - Pearson

8. T 2 5 A 2 3 20d∴ d 5 ​ ____ T 2​20A 29. H 2 5 4 2 ___ L9.8 ​∴ L 5 _____ ​ 9.8H 2​4 210. r 5 3 ​√ ___P__C ​ ​2 l11. b 5 3a(​ 3 √ __k ​2 x)Activity 16.3 (Student’s Book page 296)1. a) 6 m 3b) V 5 lbhc) h 5 ​V__lb ​d) h 5 ______ 6​ ​5 2.5 m1.2 3 22. h 5 1 500(26 2 T) 5 1 500(26 1 52)5 117 000 mExtension Activity 16.2 (Student’s Book page 297)1. Cost 5 1.15 3 10 1 3.52x2. P 5 ​ __________________________________________0.04 1 1.7y 1 1.5hhd 2 0.13rf 2 2.1hr 1 0.53gov 2 Q​0.17Exercise 16.3 (Student’s Book page 297)1. a) p 5 2A qb) p 5 _______ ​ 2 3 100 ​5 8 cm252. R 5 ​E__I ​a) E 5 IRb) I 5 E Rc) E 5 1.5 3 25 5 37.5 voltsd) I 5 ___ ​ 12 ​5 0.8 amperes__________ 153. d 5 ​ √8h​( R 2 ​h__2 )___4. v 5 √ ​ ___ 2Em ​ ​5 √ ____​ ____ E6005. a) Cost 5 300 1 45pb) p 5 _______ C 2 300​ ​5 ________ 560 – 300​ ​ 5 5.845 45c) Kabelo can take 4 people plus himself (5 people in total).98 EXPLORING MATHEMATICS FORM 3