What is the length of XY when w=1.3 units?

Organisms that live in the alpine and taiga biomes have developed unique adaptations that aid in their survival. the douglas-fir is a conifer tree that grows in the taiga biome. it has an average height of about 70 feet, and its wood is an important source of lumber.

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Will give a: 122 b: 90 c: 48 d: 180