The perimeter is the distance around the outside of a closed 2D shape, space or area ... so you can use your three times table to help you calculate the perimeter. 3cm × 6 = 18cm Now you need ...

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 ...