# What is the circumference of a tennis ball?

Tennis Balls have a diameter of 2.575”-2.7” (6.54-6.86 cm) and circumference of 8.09”-8.48” (20.6-21.5 cm). The mass of a Tennis Ball must be between 1.975-2.095 oz (56-59.4 g).

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## In this regard, what is the diameter of a ball?

We know that the diameter of a sphere is twice the radius. i.e., the diameter, d = 2r. From this, we get r = d/2.

One may also ask, what is the volume of a tennis ball in inches? Per International Tennis Federation standard, regulation tennis balls must measure 6.54 cm to 6.86 cm in diameter, for a total volume of 9.6110 cubic inches.

## In this manner, what do the numbers mean on a tennis ball?

A common myth among players is that the printed numbers on the tennis balls indicate their bounciness. However, there is neither a special code nor a meaning related to these numbers. All tennis balls are the same within their brand.

## Is tennis ball yellow or green?

By rule of tennis law—specifically, the International Tennis Federation, or ITF—a tennis ball should be yellow in color. The edict was handed down in 1972, after television viewers had trouble following the movement of white balls.

## How do I know what size exercise ball to get?

You will want to choose a ball size that is proportional to your height. The rule of thumb is that you want to be able to sit on your ball with your legs at a 90-degree angle or slightly more, but not less. Your thighs should be parallel to the ground or angled slightly down.

## How do you calculate a diameter?

How To Calculate Diameter?

1. Diameter = Circumference ÷ π (when the circumference is given)