Afishing tackle box is 13 inches long, 6 inches wide, and 2 1/2 inches high. what is the volume of the tackle box?

Can any one me with the answers to these questions asap?

Through non-collinear points there is exactly one plane.

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