For example, in the formula for the area of a rectangle \(A = bh\) (area = base x height), the subject of the formula is \(A\). In the formula \(A = bh\), the area (\(A\)) is the subject of the ...

To calculate the sector area, first calculate what fraction of a full turn the angle is. The formula to calculate the sector area is: \(\text{Sector area} = \frac{\text{angle}}{360} \times \pi r^2 ...