PSLELiam had 2.9 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 = 22, 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 - 4) + (k + 13)
= k + k + k + 2k + k - 4 + 13
= (6 k + 9) cm
(b)
1 m = 100 cm
2.9 m = 290 cm
Total length of streamer used if k = 22
= 6 k + 9
= 6(22) + 9
= 132 + 9
= 141 cm
Total length of streamer not used
= 290 - 141
= 149 cm
1 cm = 0.01 m
149 cm = 1.49 m
Answer(s): (a) (6k + 9) cm; (b) 1.49 m