Question

which has greater perimeter a square of side 5 cm or rectangle of length 5 cm and breadth 3 cm ?

Answer 1

perimeter of square =4*side =4*5=20
and the perimeter of the rectangle =2(l+b)=2*(5+3)=2*8=16 cm and hence square have larger perimeter

Answer 2

perimeter of a square is 4a, where a is side of square
4a. = 4*5= 20cm
perimeter of rectangle = 2(l+b)
. 2(5+3)= 2*8= 16cm
therefore, square has greater perimeter