To work out the perimeter on a grid, let's look at this rectangle drawn on a square grid. Each square is worth 1 cm. To find the perimeter of the rectangle, you have to add up all of the sides.

Watch this video to learn how to find the area of quadrilaterals. A garden is in the shape of a rectangle measuring \(16.3m\) by \(12.4m\). The gardener marks out the two diagonals and decides to ...