PSLEZane had 3.6 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 c.
- If c = 11, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= c + c + c + (3c - 8) + (c + 16)
= c + c + c + 3c + c - 8 + 16
= (7 c + 8) cm
(b)
1 m = 100 cm
3.6 m = 360 cm
Total length of streamer used if c = 11
= 7 c + 8
= 7(11) + 8
= 77 + 8
= 85 cm
Total length of streamer not used
= 360 - 85
= 275 cm
1 cm = 0.01 m
275 cm = 2.75 m
Answer(s): (a) (7c + 8) cm; (b) 2.75 m