PSLEDaniel had 2.8 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 = 26, 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 + (2c - 8) + (c + 16)
= c + c + c + 2c + c - 8 + 16
= (6 c + 8) cm
(b)
1 m = 100 cm
2.8 m = 280 cm
Total length of streamer used if c = 26
= 6 c + 8
= 6(26) + 8
= 156 + 8
= 164 cm
Total length of streamer not used
= 280 - 164
= 116 cm
1 cm = 0.01 m
116 cm = 1.16 m
Answer(s): (a) (6c + 8) cm; (b) 1.16 m