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An electric pole caste a shadow of le...

An electric pole caste a shadow of length 20 metres at a time when a tree 6 metres high caste a shadow of length 8 metres. Find the height of the pole.

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A vertical pole of length 6 m casts a shadow 4 m long on the ground and at the same time a tower casts a shadow 28 m long. Find the height of the tower.

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