# Area of a Circle Calculator

## Calculating area of a circle

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## what is area of a circle?

The area of a circle is calculated using the formula:

$\text{}$

where $$ (pi) is a mathematical constant approximately equal to 3.14159, and $$ is the radius of the circle. The formula represents the space enclosed by the circle in square units.

## 10 inch diameter circle area

To calculate the area of a circle, you can use the formula:

$\text{Area}=\mathrm{\xcf\u20ac}\xc3\u2014{\left(\frac{\text{Diameter}}{2}\right)}^{2}$

Given a 10-inch diameter circle, the radius ($\frac{\text{Diameter}}{2}$) would be $\frac{10}{2}=5$ inches.

Now, substitute this radius into the formula:

$\text{Area}=\mathrm{\xcf\u20ac}\xc3\u2014(5{)}^{2}$

$\text{Area}=\mathrm{\xcf\u20ac}\xc3\u201425$

So, the area of a circle with a 10-inch diameter is $25Ï€$ square inches. If you want a numerical approximation, you can use $$ to find the approximate area.

## 20 inch diameter circle area

To calculate the area of a circle with a diameter of 20 inches, you can use the formula:

$\text{Area}=\mathrm{\xcf\u20ac}\xc3\u2014{\left(\frac{\text{Diameter}}{2}\right)}^{2}$

Given a 20-inch diameter circle, the radius ($\frac{\text{Diameter}}{2}$) would be $\frac{20}{2}=10$ inches.

Now, substitute this radius into the formula:

$\text{Area}=\mathrm{\xcf\u20ac}\xc3\u2014(10{)}^{2}$

$\text{Area}=\mathrm{\xcf\u20ac}\xc3\u2014100$

So, the area of a circle with a 20-inch diameter is $\mathrm{}$ square inches. If you want a numerical approximation, you can use $$ to find the approximate area.

## formula for finding the area of a circle

The formula for finding the area ($$) of a circle is given by:

$A=\mathrm{\xcf\u20acr}{2}^{}$

where:

- $$ (pi) is a mathematical constant approximately equal to 3.14159.
- $$ is the radius of the circle.

Alternatively, you can use the diameter ($$) of the circle to find the area using the formula:

$A=\mathrm{\xcf\u20ac{\left(\frac{D}{2}\right)}^{2}}$

Here, $$ is the diameter of the circle, and $\frac{D}{2}$ is the radius.

## formula for circumference of a circle using radius

The formula for finding the circumference ($$) of a circle using its radius ($$) is given by:

$C=2Ï€r$

where:

- $$ (pi) is a mathematical constant approximately equal to 3.14159.
- $$ is the radius of the circle.

So, to calculate the circumference of a circle, you simply multiply the radius by 2 and then multiply the result by $$.

## 1 diameter circle area

If you have a circle with a diameter of 1 unit, the radius ($$) would be half of the diameter, so $r=\frac{1}{2}$

The formula for the area ($$) of a circle is:

$A=\mathrm{\xcf\u20acr}{2}^{}$

Substitute the radius into the formula:

$A=\mathrm{\xcf\u20ac}{\left(\frac{1}{2}\right)}^{2}$

$A=\mathrm{\xcf\u20ac}\xc3\u2014\frac{1}{4}$

So, the area of a circle with a diameter of 1 unit is $\frac{\mathrm{\xcf\u20ac}}{4}$ square units. If you want a numerical approximation, you can use $$ to find the approximate area.

## 10 inch circle area

To find the area of a circle when you know the circumference, you can use the following formula:

$A=\frac{{C}^{2}}{4\mathrm{\xcf\u20ac}}$

where:

- $$ is the area of the circle,
- $$ is the circumference of the circle, and
- $$ is a mathematical constant approximately equal to 3.14159.

If you have a circle with a circumference of 10 inches, you can substitute $$ into the formula:

$A=\frac{1{0}^{2}}{4\mathrm{\xcf\u20ac}}$

$A=\frac{100}{4\mathrm{\xcf\u20ac}}$

So, the area of a circle with a circumference of 10 inches is $\frac{100}{4\mathrm{\xcf\u20ac}}$ square inches.

## 12 inch diameter circle area

If you have a circle with a diameter of 12 inches, the radius ($$) would be half of the diameter, so $r=\frac{12}{2}=$ inches.

The formula for the area ($$) of a circle is:

$A={\mathrm{\xcf\u20acr}}^{2}$

Substitute the radius into the formula:

$A=\mathrm{\xcf\u20ac}\xc3\u2014{6}^{2}$

$A=\mathrm{\xcf\u20ac}\xc3\u201436$

So, the area of a circle with a 12-inch diameter is $36Ï€$ square inches. If you want a numerical approximation, you can use $Ï€â‰ˆ3.14$ to find the approximate area.

## 14 inch diameter circle area

If you have a circle with a diameter of 14 inches, the radius ($$) would be half of the diameter, so $r=\frac{14}{2}=$ inches.

The formula for the area ($$) of a circle is:

$A=\mathrm{\xcf\u20acr}{2}^{}$

Substitute the radius into the formula:

$A=\mathrm{\xcf\u20ac}\xc3\u2014{7}^{2}$

$A=\mathrm{\xcf\u20ac}\xc3\u201449$

So, the area of a circle with a 14-inch diameter is $49Ï€$ square inches. If you want a numerical approximation, you can use $Ï€â‰ˆ3.14$to find the approximate area.

## 14 inch radius of a circle area

If you have a circle with a radius of 14 inches, you can use the formula for the area ($$) of a circle:

$A={\mathrm{\xcf\u20acr}}^{2}$

Substitute the radius into the formula:

$A=\mathrm{\xcf\u20ac}\xc3\u20141{4}^{2}$

$A=\mathrm{\xcf\u20ac}\xc3\u2014196$

So, the area of a circle with a radius of 14 inches is $\mathrm{}$ square inches. If you want a numerical approximation, you can use $Ï€â‰ˆ3.14$ to find the approximate area.

## 15cm diameter circle area

If you have a circle with a diameter of 15 centimeters, the radius ($$) would be half of the diameter, so$r$$=\frac{15}{2}$ centimeters.

The formula for the area ($$) of a circle is:

$A=\mathrm{\xcf\u20acr}{2}^{}$

Substitute the radius into the formula:

$A=\mathrm{\xcf\u20ac}\xc3\u2014(7.5{)}^{2}$

$A=\mathrm{\xcf\u20ac}\xc3\u201456.25$

So, the area of a circle with a 15-centimeter diameter is $56.25Ï€$ square centimeters. If you want a numerical approximation, you can use $$ to find the approximate area.

## 16 inch diameter circle area

If you have a circle with a diameter of 16 inches, the radius ($$) would be half of the diameter, so $r=\frac{16}{2}$ inches.

The formula for the area ($$) of a circle is:

$A=\mathrm{\xcf\u20acr}{2}^{}$

Substitute the radius into the formula:

$A=\mathrm{\xcf\u20ac}\xc3\u2014{8}^{2}$

$A=\mathrm{\xcf\u20ac}\xc3\u201464$

So, the area of a circle with a 16-inch diameter is $\mathrm{}$ square inches. If you want a numerical approximation, you can use $Ï€â‰ˆ3.14$ to find the approximate area.