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!