The length of rectangle is thrice its breadth and its perimeter is 80 m, find the area of the rectangle?	Choose the correct option:
A) 300 sq m B) 356 sq m C) 452 sq m D) 428 sq m E) 528 sq m
2(3x + x) = 80   l = 30 b = 10   lb = 30 * 10= 
<gadget id="calculator">30 * 10</gadget>
<output>300</output>
300   300 sq mNSWER:300 sq m
<result>A</result>
The length of rectangle is thrice its breadth and its perimeter is 80 m, find the area of the rectangle?