if the area of a circle is 16 Pi R Square units square what is its radius
To find the radius of a circle given its area, we can use the formula for the area of a circle: A = πr².
In this case, we are given that the area is 16πr² units².
So, we can equate the given area (16πr²) to the formula for the area of a circle (πr²) and solve for the radius (r).
16πr² = πr²
Dividing both sides of the equation by πr²:
16 = 1
Simplifying further:
r² = 16
Taking the square root of both sides:
r = √16
r = 4
Therefore, the radius of the circle is 4 units.