Find how close was kim to the president

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Reference no: EM13518053

Kim says that she was less than 10 ft away from the president when she took a picture of him with her 53-mm focal length camera lens. The picture shows the upper half of the president's body (or 3.1 ft of his total height). On the negative of the film, this part of his body is 18 mm high. How close was Kim to the president when she took the picture?

___ ft

Reference no: EM13518053

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