## How do I calculate the area of a pool?

With a square or rectangular shape, the formula for calculating area is simply to multiply length times width. So a pool that is 40 feet long and 30 feet wide will have a surface area of 1,200 square feet (40 x 30).

## How many feet around is a 15 foot pool?

So the circumference of the pool = 2*π*r = 2 * 3.1416 * 15/2 = 47.124 feet. Hope this helps.

**What is the standard size of a pool?**

Standard pool dimensions usually measure something like 10 x 20, 15 x 30, and 20 x 40, with an average depth around 5.5 feet. 10 x 20 is considered a small in-ground pool, while a 20 x 40-foot pool is on the larger side of things.

### How do you find the area surface area and volume of a shape?

Sphere Surface Area Formula and Sphere Volume Formula

- Surface area = 4πr2
- Volume = 4⁄3πr3
- Surface Area of a Prism = 2 × (Area of the base shape) + (Perimeter of base shape) × (d)
- Volume of a Prism = (Area of base shape) × d.
- Surface Area of a Box = 2(L × W) + 2(L × D) + 2(W × D)
- Volume of a Box = L × W × D.

### How many feet around is a 21 foot pool?

66 feet

The circumference is 21π feet or 66 feet.

**How big is a 21 foot round pool?**

A 21 foot above ground pool will comfortably fit 4-5 average size adults to swim, float and play….21′ Round Above Ground Pools.

Approx. U.S. Gallons | Yards of Sand | |
---|---|---|

21′ Round with 54″ Wall | 10,307 | 2-1/2 – 3 |

#### How big is a swimming pool in feet?

A swimming pool is 25 ft wide, 40 ft long, 3 ft deep at one end and 9 ft deep at the other end. If water is pumped into the pool at the rate of 10 cubic feet/min, how fast is the water level rising when it is 4 ft deep at the deep end? | Socratic A swimming pool is 25 ft wide, 40 ft long, 3 ft deep at one end and 9 ft deep at the other end.

#### How to calculate the surface area of a swimming pool?

By simply counting the number of squares occupied by the kidney shape, you can closely estimate the surface area of your pool. The essence of calculating water volume is to take the surface area and multiply it by the depth of the pool.

**What is the circumference of a 20 foot pool?**

For the sake of this calculation, you can use 3.14 as the value for pi. So, a round pool with a 20-foot diameter has a circumference of 3.14 x 20, or 62.8 feet.

## What is the average depth of a pool?

If the shallow end is 3 feet and the deep end is 9 feet, and assuming the slope of the pool bottom is gradual and even, then the average depth is 6 feet. Average depth = ( 3 + 9 ) / 2 = 6 feet. If most of the pool is only 3 or 4 feet and then a small area drops off suddenly to 10 feet, you will have a different average depth.