Question

What will happen if the length and breadth of the rectangle are both trebled?

Answer 1

Answer:

Let the original length of the rectangle = l and its original breadth = b ∴ its original area = length x breadth i.e A = l – b Since, Increased length = 3l and, increased breadth = 3b ∴ New area = 3l x 3b = 9 x l x b [∵A = l x b] ⇒ Area of the new rectangle = 9 times