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Method of calculating the surface area of the ball:

Radius r:

Diameter d:

A ball is a geometric body that has a mass of points located at the same distance from the center. This distance is commonly called the radius of the ball.
Ball surface area formula Ball surface area formula By radius where r is the radius of the ball

A ball is a geometric body that has a mass of points located at the same distance from the center. This distance is commonly called the radius of the ball.
Ball surface area formula Ball surface area formula By diameter where d is the diameter of the ball

Solution: