The shaded portion of each model represents
1
10

110
.
Which can be used to find the total shaded area in all 4 models?

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

Will give a: 122 b: 90 c: 48 d: 180

Jack brought 12 pet monkeys. if each monkey cost $45.99, how much money did he spend in all?