Question

Upon increasing each of the sides of a rectangle having a length of 4 meters and breadth 3 meters respectively by 2 meters more, what will be the increase in its area?

• A. 12 sq. m
• B. 15 sq. m
• C. 30 sq. m
• D. 18 sq. m

Answer 1

The correct option is D 18 sq. m

A rectangle has its length equal to 4 meters and breadth equal to 3 meters respectively. We are increasing both the sides by 2 meters.

So, the new length of the rectangle = 4 + 2 = 6 meters.
And the new breadth of the rectangle = 3 + 2 = 5 meters.
Now, we know the area of a rectangle is equal to length x breadth.
So, the area of the smaller rectangle is = 4 x 3 = 12 sq. m.
And the area of the bigger rectangle is = 6 x 5 = 30 sq. m.
So, the increase in area is equal to
= 30 - 12 = 18 sq. m.