Step 1: Find the length from area and breadth.<br>
Area = Length × Breadth &rArr; 135 = Length × 9<br>
&bull; Length = 135 ÷ 9 = 15 cm<br><br>
Step 2: Find the perimeter.<br>
Perimeter = 2 × (Length + Breadth)<br>
&bull; = 2 × (15 + 9) = 2 × 24 = 48<br>
<br>
Final Answer: 48 cm