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The perimeter of a rectangle is given as twice the sum of its length and breadth. The breadth of a rectangle is thrice its length, $y$. Express the perimeter in terms of $y$.
Given the length of rectangle = $y$; breadth = $3y$
To find the perimeter of the rectangle in terms of $y$
Solution:
Perimeter of rectangle = 2(length + breadth)
= $2(y + 3y)$
=$2(4y)$
= $8y$
So perimeter of the rectangle in terms of y =$8y$
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