PSLEArchie 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 p.
- If p = 24, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= p + p + p + (2p - 9) + (p + 19)
= p + p + p + 2p + p - 9 + 19
= (6 p + 10) cm
(b)
1 m = 100 cm
3.2 m = 320 cm
Total length of streamer used if p = 24
= 6 p + 10
= 6(24) + 10
= 144 + 10
= 154 cm
Total length of streamer not used
= 320 - 154
= 166 cm
1 cm = 0.01 m
166 cm = 1.66 m
Answer(s): (a) (6p + 10) cm; (b) 1.66 m