A) 10 metres
B) 80 metres
C) 90 metres
D) 60 metres
Correct Answer: C
Solution :
(Show \[10\times 10\] grid) Units around the field = 6 + 2 + 2 + 2 + 3 + 2 + 7 + 6 = 30. Length of wire needed \[\Rightarrow \frac{1}{3}=\frac{30}{x}\Rightarrow x=3\times 30=90\]metres.You need to login to perform this action.
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