The diagonal of a rectangle is 41 cm and its area is 20 sq. cm. The perimeter of

Question

The diagonal of a rectangle is 41 cm and its area is 20 sq. cm. The perimeter of the rectangle must be:

Options:

A . 9 cm

B . 18 cm

C . 20 cm

D . 41 cm

Answer: Option B

l² + b² = 41.

Also, lb = 20.

(l + b)² = (l² + b²) + 2lb = 41 + 40 = 81

(l + b) = 9.

Perimeter = 2(l + b) = 18 cm.

Was this answer helpful ?

Next Question

Submit Comment/FeedBack

More Questions on This Topic :

Question 1. The difference between the length and breadth of a rectangle is 23 m. If its perimeter is 206 m, then its area is:....

Question 2. The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?....

Question 3. The length of a rectangular plot is 20 metres more than its breadth. If the cost of fencing the plot @ 26.50 per metre i....5300, what is the length of the plot in metres?

Question 4. A rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered. If the area of the field is 680 ....sq. feet, how many feet of fencing will be required?

Question 5. A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq. m, is:....

Question 6. If the diagonal of a square is doubled. How does the area of the square change?....

Question 7. The perimeter of an isosceles triangle is equal to 14 cm and the lateral side is to the base in the ratio 5:4. The area....in the ratio 5:4. The area of the triangle is:

Question 8. Area of a square with side x is equal to the area of a triangle with base x. The altitude of the triangle is: ....

Question 9. If the circumference of a circle is 352 meters then its area in Sq.m is: ....

Question 10. If the radius of a circle be reduced by 50% its area is reduced by:....

Latest Videos

Chapter 1 - GLOBAL STEEL SCENARIO & INDI Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Latest Test Papers

Chapter 3.1 : Overview of Finance & Acco Chapter 3 : Finance & Accounts SAIL E0 - GFM 2024

Chapter 2.1 : Overview Chapter 2 : Materials Management SAIL E0 - GFM 2024

Chapter 1.1 : Personnel Functions- An ov Chapter 1 : Personnel Management SAIL E0 - GFM 2024

GPOE / GPA Combined 1 Free CBT Mock Test SAIL E0 2024

CBT Mixed Test 1 GPOE/GPA SAIL E0 2024

Menu

Popular Courses

Search

Submit Comment/FeedBack

More Questions on This Topic :

Latest Videos

Latest Test Papers