PSLECody had 2.4 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 w.
- If w = 18, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= w + w + w + (2w - 8) + (w + 20)
= w + w + w + 2w + w - 8 + 20
= (6 w + 12) cm
(b)
1 m = 100 cm
2.4 m = 240 cm
Total length of streamer used if w = 18
= 6 w + 12
= 6(18) + 12
= 108 + 12
= 120 cm
Total length of streamer not used
= 240 - 120
= 120 cm
1 cm = 0.01 m
120 cm = 1.2 m
Answer(s): (a) (6w + 12) cm; (b) 1.2 m