PSLENeave had 2.3 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 e.
- If e = 14, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= e + e + e + (2e - 7) + (e + 15)
= e + e + e + 2e + e - 7 + 15
= (6 e + 8) cm
(b)
1 m = 100 cm
2.3 m = 230 cm
Total length of streamer used if e = 14
= 6 e + 8
= 6(14) + 8
= 84 + 8
= 92 cm
Total length of streamer not used
= 230 - 92
= 138 cm
1 cm = 0.01 m
138 cm = 1.38 m
Answer(s): (a) (6e + 8) cm; (b) 1.38 m