PSLERiordan had 3.7 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 g.
- If g = 14, how much of the ribbon was not used to make the figure? Leave your answer in meters.
(a)
Total length of ribbon used
= g + g + g + (2g - 9) + (g + 11)
= g + g + g + 2g + g - 9 + 11
= (6 g + 2) cm
(b)
1 m = 100 cm
3.7 m = 370 cm
Total length of ribbon used if g = 14
= 6 g + 2
= 6(14) + 2
= 84 + 2
= 86 cm
Total length of ribbon not used
= 370 - 86
= 284 cm
1 cm = 0.01 m
284 cm = 2.84 m
Answer(s): (a) (6g + 2) cm; (b) 2.84 m