uptetd16p1 q117

117Half the perimeter of a rectangular garden, whose length is 4 m more than its width is 36 m. Length of the garden will be

Option : A
Explanation : Let the length of the rectangular garden be 'l' m.
Then, breadth of the rectangular garden be (l - 4)m.
Perimeter of rectangular garden = 2 (l + b)

⇒ 36 = l + l - 4 [half of perimeter given = 36 given]
⇒ 36 = 2l -4
⇒ 40 = 2l
⇒ l = 20 m

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