A rectangular piece of land measures 0.7km by 0.5km. Each side is to be fenced with four roundsof wire.what length of wire is needed ?

hi here is the answer

lengtth of wire needed=the perimeter of land

as we know perimeter of rectangle=2(l+b)

now 0.7 km=700m and 0.5 km=500m

now perimeter=2(700+500)

=2(1200)

=2400m

but we have to fence four rounds so the wire needed=

2400*4=9600m

or 9.6 km

so the answer is 9600m or 9.6 km

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