If a circle with a diameter of 20 m is inscribed in a square, what is the probability that a point picked at random in the square is in the shaded region? a. 1/5 b. 43/200 c. 86/314 d. 314/400

Jane moves from a house with 71 square feet of closet space to an apartment with 45.44 square feet of closet space. what is the percentage decrease of jane’s closet space?

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

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.