PSLEJenson had 3.4 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 = 24, 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 + (3i - 9) + (i + 17)
= i + i + i + 3i + i - 9 + 17
= (7 i + 8) cm
(b)
1 m = 100 cm
3.4 m = 340 cm
Total length of streamer used if i = 24
= 7 i + 8
= 7(24) + 8
= 168 + 8
= 176 cm
Total length of streamer not used
= 340 - 176
= 164 cm
1 cm = 0.01 m
164 cm = 1.64 m
Answer(s): (a) (7i + 8) cm; (b) 1.64 m