Want to calculate the radius of a circle from its area or perimeter? Here are the key formulas that no one explains clearly! ...

When converting between units for an area calculation, remember that a square has two dimensions, the length and the width. Draw two identical squares next to one another. Label one in metres (1 m ...

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 ...