What is the surface area of the right rectangular prism? enter your answer in the box. ft² the figure contains a rectangular prism. the length of the prism is 6 feet, the width is 3 feet, and the height is 4 feet.

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