Arectangular garden originally measured 5 feet by 10 feet as shown below. a path was created by increasing each side of the original rectangle by x-feet on both sides. if the area of the path that rings the garden is 54 square feet, find the value of x.

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