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UKMT Junior Kangaroo, 2019

Geometry Difficulty 2.0 Junior Find the answer United Kingdom

The diagram shows squares of three different sizes arranged into a rectangle. The length of each side of the smallest squares is 20 cm. Adam Ant walks along the path marked from $P$ to $Q$ . How far does Adam walk?

(A) $380$ cm (B) $400$ cm (C) $420$ cm (D) $440$ cm (E) $460$ cm

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