Avneet buys 9 square paving slabs, each with a side of
m. He lays them in the form of a square.
(a) What is the perimeter of his arrangement?
Side of the square
m
Perimeter of the square = 4
side = 4
m
(b) Shari does not like his arrangement. She gets him to lay them out like a cross. What is the perimeter of her arrangement?
Perimeter of the cross
m
(c) Which has greater perimeter?
Cross has greater perimeter.
(d) Avneet wonders if there is a way of getting an even greater perimeter. Can you find a way of doing this? (The paving slabs must meet along complete edges i.e. they cannot be broken.)
It is not possible to have perimeter greater than 10 m.
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