Multiple Choice Questions on The perimeter of a rectangle and a square is 80 cm each If the difference between their areas is 100........... for Mathematics - All Exams Preparation

Back to Main Page

Multiple Choice Questions

The perimeter of a rectangle and a square is 80 cm each If the difference between their areas is 100...........

Quantitative Aptitude ( CCS) Mensuration 2D
    Download Solution PDF

    The perimeter of a rectangle and a square is 80 cm each. If the difference between their areas is 100 cm. Find the sides of the rectangle.

    30cm, 10cm

    Correct Answer

    40cm, 15cm

    Incorrect Answer

    25cm, 10cm

    Incorrect Answer

    20cm, 30cm

    Incorrect Answer
    छोटे Courses बड़े Results
    Master Mensuration 2D
    Prepare through Micro-courses
    Try Now
    Explanation:

    Answer & Explanation
    Answer – A. 30cm, 10cm
    Explanation :
    2(l + b) = 4a = 80
    l + b = 40; a = 20 => a² = 400
    a² – lb = 100; 400 – lb =100; lb = 300
    (l – b)² = (l + b)² – 4lb
    (l – b)² = 1600 – 1200; l – b = 20;

    By: MIRZA SADDAM HUSSAIN
    ProfileResources

    Let's Discuss

    Master
    Mensuration 2D
    With abhipedia
    Micro Courses
    Try Now
    What our students have to say
    Review on us
    Download Abhipedia Android App

    Access to prime resources

    Downlod from playstore
    download android app download android app for free