Perimeter
Perimeter is the distance around a 2D shape. You can measure the perimeter of small 2D shapes with a ruler, or you can measure the perimeter of larger 2D areas (like rooms in your house, gardens) with something like a metre stick, measuring tape or trundle wheel.
Whatever you measure something in, you have to remember to write the unit of measure you have used (Eg. cm, mm, m etc)
Here is an example of measuring perimeter:
4cm + 4cm + 4 cm + 4cm
= 16cm
Perimeter = 16cm
Not all shapes are this easy though:
We need to work out the length of the bottom line before adding all the sides together. We can work that out by looking at how long the shape is at the top (3cm + 4cm =7cm)
Now we can calculate the perimeter. ?
There are 3 chilli challenges for you to complete – mild, hot and sizzling!! See which one you want to have a go at. Or why not try them all!
