PSLEEric 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 = 16, 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 - 8) + (p + 16)
= p + p + p + 2p + p - 8 + 16
= (6 p + 8) cm
(b)
1 m = 100 cm
2.7 m = 270 cm
Total length of ribbon used if p = 16
= 6 p + 8
= 6(16) + 8
= 96 + 8
= 104 cm
Total length of ribbon not used
= 270 - 104
= 166 cm
1 cm = 0.01 m
166 cm = 1.66 m
Answer(s): (a) (6p + 8) cm; (b) 1.66 m