How can we find the volume of a circle?
The volume of a circle is the amount of space inside the circle. It can be found by using the formula:
$$V = \pi r^2$$
where:
- V is the volume
- π is a mathematical constant approximately equal to 3.14
- r is the radius of the circle
To find the volume of a circle, we need to know its radius. The radius is half the diameter of the circle, so if the diameter is known, we can simply divide it by 2.
Once we have the radius, we can plug it into the formula to find the volume.
For example, if the diameter of a circle is 10 cm, the radius would be 5 cm. Plugging this value into the formula, we get:
$$V = \pi (5 cm)^2 = 78.5 cm^3$$
Therefore, the volume of the circle is 78.5 cm^3.
