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Area, SM-Bank 099

Calculate the area of the following triangles.

  1.  
    (2 marks)

  2.  
    (2 marks)

  3.  
      (2 marks)

Show Answers Only

a.    \(42\ \text{cm}^2\)

b.    \(17.5\ \text{m}^2\)

c.    \(24\ \text{mm}^2\)

Show Worked Solution
a.    \(\text{Area}\) \(=\dfrac{1}{2}\times bh\)
    \(=\dfrac{1}{2}\times 12\times 7\)
    \(=42\ \text{cm}^2\)

 

b.    \(\text{Area}\) \(=\dfrac{1}{2}\times bh\)
    \(=\dfrac{1}{2}\times 5\times 7\)
    \(=17.5\ \text{m}^2\)

 

c.    \(\text{Area}\) \(=\dfrac{1}{2}\times bh\)
    \(=\dfrac{1}{2}\times 6\times 8\)
    \(=24\ \text{mm}^2\)