PSLEWill had 2.7 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 i.
- If i = 16, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= i + i + i + (2i - 7) + (i + 11)
= i + i + i + 2i + i - 7 + 11
= (6 i + 4) cm
(b)
1 m = 100 cm
2.7 m = 270 cm
Total length of streamer used if i = 16
= 6 i + 4
= 6(16) + 4
= 96 + 4
= 100 cm
Total length of streamer not used
= 270 - 100
= 170 cm
1 cm = 0.01 m
170 cm = 1.7 m
Answer(s): (a) (6i + 4) cm; (b) 1.7 m