Question : The length and breadth of a rectangle are increased by 8% and 5%, respectively. By how much percentage will the area of the rectangle increase?
Option 1: 13.4%
Option 2: 15.4%
Option 3: 12.4%
Option 4: 16.4%
Latest: SSC CGL preparation tips to crack the exam
Don't Miss: SSC CGL complete guide
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 13.4%
Solution : Let the length and breadth be $l$ and $b$, respectively. $\therefore$ Original area = $lb$ Length after 8% increase = $1.08l$ Breadth after 5% increase = $1.05b$ $\therefore$ New area = $1.08l\times 1.05b = 1.134lb$ $\therefore$ Percentage increase in area = $\frac{1.134lb-lb}{lb}\times 100$ = 13.4% Hence, the correct answer is 13.4%.
Candidates can download this ebook to know all about SSC CGL.
Answer Key | Eligibility | Application | Selection Process | Preparation Tips | Result | Admit Card
Question : The length and breadth of a cuboid are increased by 20% and 25%, respectively, while its height is reduced by 30%. What must be the total percentage increase/decrease in the volume of the cuboid?
Question : If the length of a certain rectangle is decreased by 4 cm and breadth is increased by 2 cm, it would result in a square of the same area. What is the perimeter of the original rectangle?
Question : The length and breadth of a rectangle are 8 cm and 6 cm, respectively. The rectangle is cut on its four vertices such that the resulting figure is a regular octagon. What is the length of the side (in cm) of the octagon?
Question : The sum of the length and breadth of a rectangle is 6 cm. A square is constructed such that one of its sides is equal to a diagonal of the rectangle. If the ratio of areas of the square and rectangle is 5 : 2, the area of the square (in cm2) is:
Question : A lawn is in the form of a rectangle having its breadth and length in the ratio $3:4$. The area of the lawn is $\frac{1}{12}$ hectare. The breadth of the lawn is:
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile