Geometry

Question Analysis

This question focuses on using the area formula of a circle to find the radius. Given the area, the key is to manipulate the formula to solve for .

Key Concept Explanation

The formula for the area of a circle is , where is the area and is the radius. To find when is known, we isolate by first dividing both sides of the equation by and then taking the square root.

Step - by - Step Solution

1. Start with the area formula . We know that .

2. Substitute the value of into the formula: