Find the area of sphere if the radius is equal to 13cm. Ie h2r because height of the cylinder diameter of sphere Total surface area of sphere 2x. Measure the diameter of ball carefully.
Wrap the ball completely so that no space is left uncovered.
Substituting the numbers into the formula for calculating surface area we can calculate the following. Since a sphere is a combination of a curved surface and a flat base to find the total surface area we need to sum up both the areas. The surface area is half of a sphere. 4 p r ².