PSLEDaniel had 2.3 m of ribbon. He used some of it to make the figure as shown.
- How much of the ribbon did Andy use to make the figure? Leave your answer in the simplest form in terms of e.
- If e = 12, how much of the ribbon was not used to make the figure? Leave your answer in meters.
(a)
Total length of ribbon used
= e + e + e + (2e - 8) + (e + 17)
= e + e + e + 2e + e - 8 + 17
= (6 e + 9) cm
(b)
1 m = 100 cm
2.3 m = 230 cm
Total length of ribbon used if e = 12
= 6 e + 9
= 6(12) + 9
= 72 + 9
= 81 cm
Total length of ribbon not used
= 230 - 81
= 149 cm
1 cm = 0.01 m
149 cm = 1.49 m
Answer(s): (a) (6e + 9) cm; (b) 1.49 m