Question

The radius of a circle is 11 kilometers. What is the circle's area?

11 km
Use 3.14 for a
square kilometers
Submit

Answer 1

The formula for the area of a circle:
`\pi r^2`

• 
  `\pi` = 3.14
• r: length of radius --> 11 km

Let's plug the known values into the equation

`Area = \pi (11)^2=3.14*11^2=379.94`

Answer: 379.94 square kilometres.

Hope that helps!