PSLEPaul had 3.1 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 = 25, 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 - 6) + (g + 15)
= g + g + g + 2g + g - 6 + 15
= (6 g + 9) cm
(b)
1 m = 100 cm
3.1 m = 310 cm
Total length of streamer used if g = 25
= 6 g + 9
= 6(25) + 9
= 150 + 9
= 159 cm
Total length of streamer not used
= 310 - 159
= 151 cm
1 cm = 0.01 m
151 cm = 1.51 m
Answer(s): (a) (6g + 9) cm; (b) 1.51 m