To find the radius of a circle given the area, you can use the formula for the area of a circle:
Area = πr^2
Given that the area of the circle is 28.26 cm^2, we can set up the equation:
28.26 = πr^2
To find the radius, we need to solve for r.
First, divide both sides of the equation by π:
28.26 / π = r^2
r^2 = 9
Take the square root of both sides to solve for r:
r = √9
r = 3
Therefore, the radius of the circle is 3 cm.
Area and Perimeter Unit Test
If the area of a circle is 28.26 cm2 , what is the radius of the circle?
1 answer
1 answer