Bob cal and pete each made a stack of baseball cards. bob stack was 0.24 and cal stack 0.2 meter high and pete stack was 0.18 meter high .write a number sentence that compares cal stack of cards to pete stack if card

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