PSLEFlynn had 3.3 m of wire. He used some of it to make the figure as shown.
- How much of the wire did Andy use to make the figure? Leave your answer in the simplest form in terms of m.
- If m = 29, how much of the wire was not used to make the figure? Leave your answer in meters.
(a)
Total length of wire used
= m + m + m + (3m - 6) + (m + 13)
= m + m + m + 3m + m - 6 + 13
= (7 m + 7) cm
(b)
1 m = 100 cm
3.3 m = 330 cm
Total length of wire used if m = 29
= 7 m + 7
= 7(29) + 7
= 203 + 7
= 210 cm
Total length of wire not used
= 330 - 210
= 120 cm
1 cm = 0.01 m
120 cm = 1.2 m
Answer(s): (a) (7m + 7) cm; (b) 1.2 m