PSLELuke had 3.2 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 h.
- If h = 12, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= h + h + h + (2h - 10) + (h + 16)
= h + h + h + 2h + h - 10 + 16
= (6 h + 6) cm
(b)
1 m = 100 cm
3.2 m = 320 cm
Total length of streamer used if h = 12
= 6 h + 6
= 6(12) + 6
= 72 + 6
= 78 cm
Total length of streamer not used
= 320 - 78
= 242 cm
1 cm = 0.01 m
242 cm = 2.42 m
Answer(s): (a) (6h + 6) cm; (b) 2.42 m