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Area, SM-Bank 142

Calculate the area of the following kite. All measurements are in millimetres.   (2 marks)

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\(180\ \text{mm}^2\)

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\(\text{Length of diagonal 1:}\ x=4+11=15\ \text{mm}\)

\(\text{Length of diagonal 2:}\ y=2\times 12=24\ \text{mm}\)

\(\text{Area of kite}\) \(=\dfrac{1}{2}xy\)
  \(=\dfrac{1}{2}\times 34\times 20\)
  \(=180\ \text{mm}^2\)