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3. A vertical radio antenna is to be built on a hillside (with a 10.2 slope). (2 marks) A wire is to be attached

3. A vertical radio antenna is to be built on a hillside (with a 10.2 slope). (2 marks) A wire is to be attached at a point 18 meters up the antenna, and at a point 15 meters from the base of the antenna up the hillside. Calculate the length of the wire.

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