You are on the high school basketball team. The ball you use has a diameter of 9 inches. What is the volume of the ball? Use 3.14 to approximate pi. Round your answer to the nearest tenth.

121.5 cubic inches

286.1 cubic inches

381.5 cubic inches

3,052.1 cubic inches

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.