PSLEJack had 3.1 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 - 5) + (c + 17)
= c + c + c + 2c + c - 5 + 17
= (6 c + 12) cm
(b)
1 m = 100 cm
3.1 m = 310 cm
Total length of streamer used if c = 26
= 6 c + 12
= 6(26) + 12
= 156 + 12
= 168 cm
Total length of streamer not used
= 310 - 168
= 142 cm
1 cm = 0.01 m
142 cm = 1.42 m
Answer(s): (a) (6c + 12) cm; (b) 1.42 m