PSLEFred 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 = 28, 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 + (3g - 10) + (g + 16)
= g + g + g + 3g + g - 10 + 16
= (7 g + 6) cm
(b)
1 m = 100 cm
3.1 m = 310 cm
Total length of streamer used if g = 28
= 7 g + 6
= 7(28) + 6
= 196 + 6
= 202 cm
Total length of streamer not used
= 310 - 202
= 108 cm
1 cm = 0.01 m
108 cm = 1.08 m
Answer(s): (a) (7g + 6) cm; (b) 1.08 m