Try a couple problems from the sphere practice CBA Review Volume of a Sphere Practice (Khan Academy) Study Study Study Circumference of a Circle Area of a Circle Surface Area Surface Area (Kahn Academy) - this has lessons AND practice! Excellent resource! Surface Area Practice (iXL) Surface Area (Animation) Volume of Prisms Volume Example (Khan Academy) Volume of Prism GameVolume of Pyramids Interactive Practice (Scroll down for pyramids but you can practice the other skills, too!) Volume of Cones |