How far did erupted materials travel and effect cars and trees during the last major eruption of Mount Merapi?

Question

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During the last major eruption of Mount Merapi in 2010, the erupted materials traveled as far as 240 kilometers away from the volcano. This caused damage to cars and trees in the surrounding areas. While the eruption did send ash and gas as high as 12,000 meters into the stratosphere, it did not travel around the world for several days or 1200 kilometers into India and Nepal.

How Far Did Erupted Materials Travel and Effect Cars and Trees