area of a circle with a given radius
Check the final answer first, then review the worked steps.
Problem
area of a circle with a given radius
Step-by-step solution
The area of a circle is given by the formula $A = \pi r^2$. With a radius of 3 units, the area is $A = \pi (3^2) = 9\pi$. Calculating this value and rounding to the nearest hundredth gives approximately 28.27.
Answer
28.27 square units