The perimeter is the distance around the outside of a 2D shape. The distance can be measured in units like millimetres, centimetres, metres and kilometres. To work out the perimeter, add up the ...

Area is the amount of space taken up by a 2D shape. When you want to measure the space on a wall, floor or a piece of paper, you are measuring area. Area can be measured in square centimetres (cm²) ...