If da area of a circle is 28.26 cm 2, wut is da radius of da circle?

Answer 1

To find the radius of a circle given its area, you can use the formula for the area of a circle:

$$A=\pi r^2$$

where $A$ is the area and $r$ is the radius.

Given that the area $A$ is 28.26 cm², you can set up the equation:

$$28.26=\pi r^2$$

To solve for $r$, first divide both sides by $\pi$:

$$r^2=\frac{28.26}{\pi }$$

Using the approximate value of $\pi$ as 3.14, you can calculate:

$$r^2\approx \frac{28.26}{3.14}\approx 9$$

Now take the square root of both sides:

$$r\approx \sqrt{9}=3\text{ cm}$$

Therefore, the radius of the circle is approximately 3 cm.