Choose Yes or No to tell if each statement is true. A rhombus is a trapezoid.
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A parallelogram has exactly 1 pair of parallel sides.
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A rectangle is also a rhombus.
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A rectangle is also a parallelogram.
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Please say yes or no for every answer.

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters