Use the diagram to answer the questions.
C
What is the area of the circle in terms of pi?
1 units
What is the measure of the central angle of the shadec
sector?
A
2170
What is the area of the shaded sector rounded to the
nearest whole number?
units
11
T
Intro

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