To find the radius of a circle given its area, we use the formula for the area of a circle:
A = πr²
Where A is the area, r is the radius, and π (pi) is approximately 3.14. Given that the area (A) is 154 cm², we can rearrange the formula to solve for the radius:
r² = A / π
Now, substituting the known values:
r² = 154 / 3.14
r² ≈ 49.06
Next, we take the square root of both sides to find the radius:
r ≈ √49.06
r ≈ 7 cm
Therefore, the radius of the circle is approximately 7 cm.