PSLEValen had 3.5 m of streamer. He used some of it to make the figure as shown.
- How much of the streamer did Andy use to make the figure? Leave your answer in the simplest form in terms of g.
- If g = 23, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= g + g + g + (2g - 4) + (g + 18)
= g + g + g + 2g + g - 4 + 18
= (6 g + 14) cm
(b)
1 m = 100 cm
3.5 m = 350 cm
Total length of streamer used if g = 23
= 6 g + 14
= 6(23) + 14
= 138 + 14
= 152 cm
Total length of streamer not used
= 350 - 152
= 198 cm
1 cm = 0.01 m
198 cm = 1.98 m
Answer(s): (a) (6g + 14) cm; (b) 1.98 m