Question

The length of a rectangle is increased by $30\%$ and the breadth is also increased by $30\%$. Then what is the effect on the area of the rectangle?

• A. Increases by $30\%$
• B. Decreases by $30\%$
• C. Decreases by $69\%$
• D. Increases by $69\%$

Answer 1

The correct option is D Increases by $69\%$

$LetthelenghtsandbreadthsinitiallybexandyArea=xyNewlength=1.3xNewbreadth=1.3yNewarea=1.69xyIncrease=69$