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UKMT Junior Kangaroo, 2015

Geometry Difficulty 2.0 Junior Find the answer United Kingdom

The diagram on the right shows a cube of side $18$ cm. A giant ant walks across the cube's surface from $X$ to $Y$ along the route shown. How far does it walk?

(A) $54$ cm (B) $72$ cm (C) $80$ cm (D) $88$ cm (E) $90$ cm

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