Perimeter and Area of Rectangle

Perimeter and Area of Rectangle

Secondary 1

\(ABCD\) is a rectangle. \(AB=\left( \frac{1}{2}x+1 \right)\)cm, \(BC=\left( x-9 \right)\)cm and \(CD=\left( \frac{3}{4}x-2 \right)\)cm.

Find

  1. the value of \(x\),
  2. the perimeter of \(ABCD\),
  3. the area of \(ABCD\).

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Answer:(a) \(12\) (b) \(20\text{ cm}\) (c) \(21\text{ cm}^2\)

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