The area of a rectangular sheet of aluminium is 400cm². If the breadth of a sheet is 16cm ,find its length. Also find the perimeter of the aluminum sheet
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Step-by-step explanation:
Given,
The area of a rectangular sheet of aluminium = 400cm²
Breadth of the sheet = 16cm
The formula for finding the area of a rectangle=l×b
⇒l×16=400
⇒l=400/16
⇒l=25
The formula for finding the perimeter of the rectangle=2×(l+b)
=2×(25+16)
=2×41
=81
Therefore the perimeter of the rectangular sheet is 81cm
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