Find the area of a circle whose radius is 3 meters.

In order to find the area of ​​a circle, if the length is known, its radius is 3 meters, recall and apply the formula for finding the area of ​​a circle.

There are two formulas for finding the area of ​​a circle:

1. Formula for finding the area of ​​a circle through the diameter:

S = 1 / 4пd ^ 2, where d is the diameter of the circle, and the number n = 3.1 (according to the problem statement).

2. Formula for finding the area of ​​a circle in terms of the radius:

S = 2пR ^ 2, where R is the radius of the circle.

Since we are given a radius, we will use the second formula:

S = 2 * 3.1 * 3 ^ 2 = 6.2 * 9 = 55.8 square meters area of ​​the circle.

Answer: 55.8 square meters area of ​​the circle.