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Area, SM-Bank 105

Calculate the area of the following circle, correct to one decimal place.  (2 marks)
 

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\(514.7\ \text{cm}^2\ (1\ \text{d.p.})\)

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\(\text{Area}\) \(=\pi r^2\)
  \(=\pi\times 12.8^2\)
  \(=514.7185\dots\)
  \(\approx 514.7\ \text{cm}^2\ (1\ \text{d.p.})\)