PSLECaden had 2.2 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 k.
- If k = 16, 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 - 9) + (k + 13)
= k + k + k + 2k + k - 9 + 13
= (6 k + 4) cm
(b)
1 m = 100 cm
2.2 m = 220 cm
Total length of streamer used if k = 16
= 6 k + 4
= 6(16) + 4
= 96 + 4
= 100 cm
Total length of streamer not used
= 220 - 100
= 120 cm
1 cm = 0.01 m
120 cm = 1.2 m
Answer(s): (a) (6k + 4) cm; (b) 1.2 m