Multiple Choice Questions on In a trapezium ABCD AB and DC are parallel sides and ang ADC 90 deg If AB 15 cm CD 40 cm and diagona........... for SSC CGL Exam Preparation

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Multiple Choice Questions

In a trapezium ABCD AB and DC are parallel sides and ang ADC 90 deg If AB 15 cm CD 40 cm and diagona...........

Quantitative Aptitude (CGL) Coordinate Geometry
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    In a trapezium ABCD, AB and DC are parallel sides and ∠ ADC = 90°. If AB = 15 cm, CD = 40 cm and diagonal AC = 41 cm. Then the area of the trapezium ABCD is

    245 cm2

    Incorrect Answer

    240 cm2

    Incorrect Answer

    247.5 cm2

    Correct Answer

    250 cm2

    Incorrect Answer
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    Explanation:


    In?ADC, ∠D=90
    ∴AC^2=CD^2+AD^2
    AD^2=41^2−40^2
    (AD^2)1681−1600
    AD=√81
    AD=9
    Area of trapezium
    =1/2(AB+CD).AD
    =1/2(40+15)9=1/2×55×9
    =495/2=247.5cm2

    By: MIRZA SADDAM HUSSAIN
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