The perimeter of a rectangle is 120cm.if length is 40cm.find its breadth and surface area of the planck
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perimeter of rectangle = 2(l +b).
120. = 2(40 +b)
b = 20cm
surface area =l×b
40×20
= 800 sq cm
120. = 2(40 +b)
b = 20cm
surface area =l×b
40×20
= 800 sq cm
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