What is the length of in the rectangular prism? round to the nearest tenth of a centimeter.
a. 18.0 cm
b. 24.1 cm
c. 28.9 cm
d. 30.2 cm?

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