WHAT YOU NEED: ruler, scissors, pencil, piece of card. Image caption, STEP 1: Use the ruler and pencil to draw a diagonal line from the bottom left corner of the card to any point on the top edge ...

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 ...