do you have to square root if you need to find the radius in a question and it is squared
Yes, if you are given the area of a circle and it is expressed in terms of the square of the radius (like πr^2), then you would need to take the square root of the area to find the radius. This is because the formula for the area of a circle is A = πr^2, which means the radius is the square root of the area divided by π.
No, you do not need to take the square root to find the radius if the value is already squared. If the value given is the area of a circle, then the formula for the area of a circle is A = πr^2, where A is the area and r is the radius.
To find the radius, rearrange the formula to solve for r:
r^2 = A/π
r = √(A/π)
So, if you are given the area and it is already squared, you do not need to take the square root. Simply divide the squared area by π to get the radius.