I have a 9 by 9 space that is 8 feet high, therefore around 139,000 tennis balls would fit. You did not provide room size, however this provides you an idea of how to approximate. A standard ball measures 1 meter in diameter and weighs 5 ounces (143 grams). There are 4,972,500,000 such balls in **100 million bundles**.

The average bundle contains **25 balls**, so there are 24,975,000 bundles in total. If each bundle was used once, then the room would be filled to capacity after **39 years**.

Tennis courts are designed to hold about 400 balls, which will go bad after **several months** if not used. It is estimated that up to 20% of all balls used in play become lost due to ejections from the court and holes worn in the surface of the court by the ball's bounce. This means that at least 10% of all balls used in play are lost before they can be re-used.

There are more tennis balls in existence than stars in the sky.

If we used a ruler and calculated specific dimensions for the room and the tennis ball, our result would be much different. We were startled to discover that the space could house **1,334,459 tennis balls**. This calculation is based on a room that is **20 feet** by 20 feet, which is equal to 200 square feet.

There are about 2.5 inches of space between **each ball**. This means that there will be enough space for 250 million balls to be packed into this room. This is almost twice as many as we thought! You can see how many more balls there would be if the room was larger or had **fewer walls**.

This calculator does not take into account any other objects that might be in the room such as chairs or tables. If you add these things into the calculation, the number of balls that can be housed increases even more. For example, if we assume that the room is still 20 feet by 20 feet but it has chairs and tables placed randomly throughout the room, then there would be enough space for over 3 billion tennis balls.

The reason that this calculation is interesting is because it shows us how much space there is in a room. It also shows us how many more balls there would be if the room was bigger or had fewer walls.

We divide this figure by 8 cubic inches to get the total number of tennis balls that will fit in the commons room. As a result, divide 10,675,674 cubic inches by 8 cubic inches to get 1,334,459 tennis balls. This works out to about 1.3 million.

Tennis balls are made up of two parts: a casing and a rubber ball. The casings are usually made from polyurethane or latex, while the rubbers are most often natural or synthetic. There are approximately 8 cubic inches in a tennis ball. Multiply the number of balls by $10 for plastic-wrapped balls or $20 for un-wrapped balls, and you have your budget.

Some stores may sell them by the pound instead of by the box. That's fine as long as you know how many pounds there are in a box. To make things easier, most stores that sell **tennis balls** by the pound also sell boxes of **100 balls**. That way you can just buy what you need without having to worry about overbuying or underbuying.

The best way to avoid overspending on tennis balls is to check **online auction sites** for deals. Sometimes people will list how many balls there are in a box and if they're open or not. If you sign up for their email list, you'll be notified when they post **new auctions**.