Perimeter

problem
Favourite

Perimeter Possibilities

Age

11 to 14

Challenge level

1 out of 3

I'm thinking of a rectangle with an area of 24. What could its perimeter be?
problem
Favourite

Perimeter Challenge

Age

11 to 14

Challenge level

1 out of 3

Can you deduce the perimeters of the shapes from the information given?
problem
Favourite

On the Edge

Age

11 to 14

Challenge level

2 out of 3

If you move the tiles around, can you make squares with different coloured edges?
problem
Favourite

Warmsnug Double Glazing

Age

14 to 16

Challenge level

1 out of 3

How have "Warmsnug" arrived at the prices shown on their windows? Which window has been given an incorrect price?
problem
Favourite

Pick's Theorem

Age

14 to 16

Challenge level

2 out of 3

Polygons drawn on square dotty paper have dots on their perimeter (p) and often internal (i) ones as well. Find a relationship between p, i and the area of the polygons.
problem

Coke Machine

Age

14 to 16

Challenge level

1 out of 3

The coke machine in college takes 50 pence pieces. It also takes a certain foreign coin of traditional design...
problem

Squareflake

Age

16 to 18

Challenge level

2 out of 3

A finite area inside and infinite skin! You can paint the interior of this fractal with a small tin of paint but you could never get enough paint to paint the edge.
problem

Smaller and Smaller

Age

7 to 14

Challenge level

3 out of 3

Can you predict, without drawing, what the perimeter of the next shape in this pattern will be if we continue drawing them in the same way?
problem

Lawn Border

Age

5 to 11

Challenge level

1 out of 3

If I use 12 green tiles to represent my lawn, how many different ways could I arrange them? How many border tiles would I need each time?
problem

Cutting It Out

Age

5 to 11

Challenge level

1 out of 3

I cut this square into two different shapes. What can you say about the relationship between them?