Year 5 Measure – Find the perimeter

Measure and calculate the perimeter of composite shapes 

Y5 Measure – find the perimeter printable sheet

 

Investigation: Find the perimeter

 

 

 

I have sixteen 1cm² squares and join them together to make a shape. Each edge of a square fully joins to another…

So…

and not

All sixteen squares are used to make the shape. The perimeter of the shape is 26cm. Can you find out what the shape looks like?
HINT – it is not a regular shape.

Extension activity:
Using the 16 squares, can you find the shape which would have the longest perimeter?


Answer:

There are a number of possible solutions for this. One example is…

 

 

 

For finding the longest perimeter, again there will be a number of different possibilities.