# What is the area of a circle with a radius of 10cm?

The circle's area is **314.159 cm****2**

### How do you find the perimetre or area of a circle?

To find the area you multiply pi (3.14) by the radius and then multiply your answer by the radius again. For example: Say the radius is 10cm. You would go 3.14x10x10. IMPORTANT: 3.14xr2 is different than 3.14xrx2! Also, if you have the circumference of the circle but need the radius, just divide the circumference by 2. Hope this helps!