avneet buys 9 square paving slabs each with a side of 1/2 m.he lays them in the form of a square.
(a) what is the perimeter of his arrangement ?
(b) shari does not like his arrangement.she gets him to lay them out like a cross. what is the perimeter of her arrangement ?
(c) which 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 ?

here i have only 1 doubt.....
in 'D' if the answer is no,can you please prove it ?