The expression 2(l + w) is used to calculate the perimeter of a rectangle, where l is length and w is width. If the length is Fraction 2 over 5 unit and the width is Fraction 1 over 5 unit, what is the perimeter of the rectangle in units?
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Answer:6/5 units.
Proof: length 'l' = 2/5
width 'w' =1/5
perimeter of rectangle= 2(l + w)...(1)
after putting values of 'l' and 'w' in eq(1) ,
=> 2 × (2/5 + 1/5)
=> 2 × (2+1/5)
=> 2 × (3/5)
=> 6/5.
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