Answers

2016-04-11T05:10:04+05:30
The perimeter of a rectangle:
P = 2 * (45.5 + 23.5) = 2 * 69 = 138 m
The fence has 3 layer of barbed wire, so its length:
3 * 138 = 414 m

Answer: 414 m of wire

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2016-04-11T11:07:36+05:30
Perimeter of rec. = 2( l + b )
Here , l = 45.5 m. & b = 23.5 m.
So,     P = 2(45.5 + 23.5 )
⇒          2 (69) = 138 m. 

The fence has 3 layer of  barbed wire so its length will be , 
⇒ 3*138 
⇒ 414 m.

Hence, 414 m. of wire is needed..
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