## Exam-Style Question on Number## A mathematics exam-style question with a worked solution that can be revealed gradually |

Question id: 166. This question is similar to one that appeared on a GCSE Higher paper (specimen) for 2017. The use of a calculator is not allowed.

The difference between the areas of the two squares is 51 cm^{2}.

When measured in cm the lengths of the sides of the squares are integers and both less than 20cm.

Find the lengths of the sides of the two squares.

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