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Area, SM-Bank 073 MC

A large square feature tile has an area of 15 625 square centimetres.

What is the area of the feature tile in square millimetres?

  1. \(156.25\ \text{square millimetres}\)
  2. \(1562.5\ \text{square millimetres}\)
  3. \(156\ 250\ \text{square millimetres}\)
  4. \(1\ 562\ 500\ \text{square millimetres}\)
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\(D\)

Show Worked Solution

\(\text{Side length}\ =\sqrt{15\ 625}\ =125\ \text{cm} = 125 \times 10 = 1250\ \text{mm}\)

\(\text{Area}\ =1250^2 =1\ 562\ 500\ \text{square millimetres}\)

\(\Rightarrow D\)