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Unit Conversion, SM-Bank 001

A rectangle has an area of 450 square centimetres.

Using the conversion ratio, 1 cm² = 100 mm², express the area of the rectangle in square millimetres.  (1 mark)

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\(45\ 000\ \text{mm}^{2}\)

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\(450\ \text{cm}^{2}\) \(= 450 \times 100\ \text{mm}^{2} \)
  \(= 45\ 000\ \text{mm}^{2} \)