PSLEJenson had 3.5 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 d.
- If d = 11, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= d + d + d + (3d - 3) + (d + 14)
= d + d + d + 3d + d - 3 + 14
= (7 d + 11) cm
(b)
1 m = 100 cm
3.5 m = 350 cm
Total length of streamer used if d = 11
= 7 d + 11
= 7(11) + 11
= 77 + 11
= 88 cm
Total length of streamer not used
= 350 - 88
= 262 cm
1 cm = 0.01 m
262 cm = 2.62 m
Answer(s): (a) (7d + 11) cm; (b) 2.62 m