A certain telescope has an objective of focal length 1580 cm. If the Moon is used as an object, a 1.4 cm long image formed by the objective

A certain telescope has an objective of focal length 1580 cm. If the Moon is used as an object, a 1.4 cm long image formed by the objective corresponds to what distance, in miles, on the Moon? Assume 3.8 multiplied by 108 m for the Earth-Moon distance.

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