PSLECody had 2.7 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 p.
- If p = 10, how much of the ribbon was not used to make the figure? Leave your answer in meters.
(a)
Total length of ribbon used
= p + p + p + (2p - 9) + (p + 20)
= p + p + p + 2p + p - 9 + 20
= (6 p + 11) cm
(b)
1 m = 100 cm
2.7 m = 270 cm
Total length of ribbon used if p = 10
= 6 p + 11
= 6(10) + 11
= 60 + 11
= 71 cm
Total length of ribbon not used
= 270 - 71
= 199 cm
1 cm = 0.01 m
199 cm = 1.99 m
Answer(s): (a) (6p + 11) cm; (b) 1.99 m