At a wedding, guests have come shaped containers that hold flower petals to throw at the bride and groom as they leave. The cones have a radius of 5 centimeters and a height of 10 centimeters. If there are 150 cones, what is the total volume of petals that all the cones will hold?

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