A rectangular piece of land measure 0.8km by 0.6km. Each side is to be fenced with three rows of wire. Find the length of the wire needed . If the cost of fencing is 50 per metre, find the total cost of fencing the land
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Given length of rectangle field = 0.7 km
breadth of rectangle field = 0.5 km
Perimeter of rectangle field = 2[l+b]
=2[0.7+0.5]
Perimeter of field = 1.2×2=2.4km
length of filed fencing = 4P=4×2.4
length of fence = 9.6km
∴ length of wire needed is 9.6 km.
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