WHAT YOU NEED: an orange, pencil and paper. The orange should be as round as possible, so the peel represents the surface area of a sphere. STEP 2: Repeat this 3 more times. You should now have 4 ...

The sphere has no circumference at all. The sphere contains little hemispheres and circles. Area of a Circle = π r2 Area of a Sphere = 4 π r2 (r represents the radius) A circle has no volume ...

The total surface area of an object is the area of its base and the curved surface as well. Therefore, TSA = Area of base + Area of the curved surface The amount of space covered by an object is ...