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Photograph of the ground ar taken form a...

Photograph of the ground ar taken form an air-craft ,flying at an altutude of 2000m by a camera with a lens of focal length`50cm`.The size of the film in the camera si `18xx18cm`.What area of the ground can be photography by this camera at any one time.

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Photograph of the ground are taken form an air-craft ,flying at an altitude of 2000 m by a camera with a lens of focal length 50 cm . The size of the film in the camera is 18xx18cm .What area of the ground can be photography by this camera at any one time.

Photograph of the ground are taken form an air-craft ,flying at an altitude of 2000 m by a camera with a lens of focal length 50 cm . The size of the film in the camera is 18xx18cm .What area of the ground can be photography by this camera at any one time.

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