Question
A rectangle has a length of 9k m and a breadth of 2n m. Find
  1. its area in terms of k and n,
  2. its perimeter in terms of k and n,
  3. the area of the rectangle if k = 3 and n = 9.
4 m
(a)

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(b)

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(c)

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A rectangle has a length of 9k m and a breadth of 2n m. Find
  1. its area in terms of k and n,
  2. its perimeter in terms of k and n,
  3. the area of the rectangle if k = 3 and n = 9.