Find all the possible dimensions (in natural numbers) of a rectangle with a perimeter 36cm and find their areas.
Perimeter of rectangle = 36 cm.
2 × (l + b) = 36
l + b = 18
So l × b = 16 × 2; 14 × 4; 12 × 6 etc.
Area for l × b = 16 × 2 = 32 sq.cm
Area for second case = 14 × 4
= 56 sq.cm
Area for third case = 12 × 6
= 72 sq.cm