The perimeter of a rectangle is 140cm . If the breadth of the rectangle is 40cm, Find its length . Also find the area of the rectangle . Who tells correct they are brainleist
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let length = x
breadth = 40cm
perimeter = 2(l+b) = 140cm
= 2(x+40)=140
=2x+80=140
=2x=140-80
=2x=60
=x=60/2
=x=30cm
length = 30cm
breadth = 40cm
area = l×b
=30×40
=1200cm²
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