standard_description: Construct the inscribed and circumscribed circles of a triangle, and prove properties of angles for a quadrilateral inscribed in a circle.
problem_activity: A tank that measures
$$1\frac{1}{2}$$
feet across,
$$2\frac{1}{3}$$
feet wide, and
$$1\frac{1}{2}$$
feet tall, is filled halfway with water, as shown below. To fill the tank to the very top with water, how many cubic feet of water need to be added?
[IMG]


aligns: no