Rearranging the formula for the circumference of a circle makes the radius the subject. Start with the new subject and write out the function machine for the formula, showing each operation step by ...

When you need to find a subject that has been squared in your formula, you need to find the square root of each side. If \(y={x}^2\), then \(x=\sqrt{y}\) If \(y={x}^2 ...