PSLEOwen 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 t.
- If t = 22, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= t + t + t + (3t - 3) + (t + 11)
= t + t + t + 3t + t - 3 + 11
= (7 t + 8) cm
(b)
1 m = 100 cm
3.6 m = 360 cm
Total length of streamer used if t = 22
= 7 t + 8
= 7(22) + 8
= 154 + 8
= 162 cm
Total length of streamer not used
= 360 - 162
= 198 cm
1 cm = 0.01 m
198 cm = 1.98 m
Answer(s): (a) (7t + 8) cm; (b) 1.98 m