The cylinder is described near the ball. The volume of the ball is 8cm 3. Find the volume of the cylinder.

Let’s use the formula for the volume of a ball.

Vsh = n * R ^ 3 * 3/4, R – where is the radius of the ball.

By condition Vsh = 8 cm3.

8 = n * R ^ 3 * 4/3.

R ^ 3 = 3 * 8 / n * 4 = 6 / n.

The volume of the cylinder is: Vc = Ssc * H = n * R ^ 2 * H, where R is the radius of the circle at the base of the cylinder, which is equal to the radius of the ball, H is the height of the cylinder, which is equal to the diameter of the ball.

Vts = n * R ^ 2 * 2 * R = 2 * n * R ^ 3 = 2 * n * 6 / n = 12 cm3.

Answer: The volume of the cylinder is 12 cm3.



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