What is the approximate volume of this composite figure? Use 22/7 for pi. Around to the nearest hundredth.

the figure is a cone with a hemisphere on it. the height of the come is 14cm and the radius of both is 3.

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