PSLEIvan had 2.6 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 k.
- If k = 14, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= k + k + k + (2k - 8) + (k + 12)
= k + k + k + 2k + k - 8 + 12
= (6 k + 4) cm
(b)
1 m = 100 cm
2.6 m = 260 cm
Total length of streamer used if k = 14
= 6 k + 4
= 6(14) + 4
= 84 + 4
= 88 cm
Total length of streamer not used
= 260 - 88
= 172 cm
1 cm = 0.01 m
172 cm = 1.72 m
Answer(s): (a) (6k + 4) cm; (b) 1.72 m