Spike's Calculators

# Area of a Circle from Foot and Inch Diameter

Calculate the area of a circle from diameter measured in foot and inch with results in square feet and acres.

### Area of a Circle

Diameter ft in
Decimal Precision #

#### Results:

 Area in Square Feet ft² Area in Acres ac

#### Calculator

1. the circle's diameter in feet and inches
2. decimal precision, the number of digits after the decimal point

#### Result

1. area of circle in square feet
2. area of circle in acres

### Conversions

```one square foot (ft²) = 0.0000229568411386593 acres (ac)
one acre (ac) = 43560 square feet (ft²)```

### Formula

```A = 𝝅/4D²
where A is the area of the circle
𝝅= 3.14159265
D the diameter
```

### Example Calculation:

Circle with a diameter of 14 ft - 8 in
`14 +  8 ÷ 12 (inch to foot value) =  14.66666666666667`
`14 ft - 8 in = 14.66666666666667 feet`
```(3.14159265 ÷ 4) * (14.66666666666667²)
0.785398 * 215.111111111208 = 168.947836```
`A circle with a diameter of 14 ft - 8 in has an area of 168.948 square feet.`
If you have any questions or comments please Contact Us
Privacy Policy
© 1998, VmNet.