Multiple Choice Questions on ABC is an isosceles triangle with AB AC 15 cm and altitude from A on BC is 12 cm Length of side BC i........... for SSC CGL Exam Preparation

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Multiple Choice Questions

ABC is an isosceles triangle with AB AC 15 cm and altitude from A on BC is 12 cm Length of side BC i...........

Quantitative Aptitude (CGL) Mensuration 2D
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    \DeltaABC is an isosceles triangle with AB = AC = 15 cm and altitude from A on BC is 12 cm. Length of side BC is

    9 cm

    Incorrect Answer

    12 cm

    Incorrect Answer

    18 cm

    Correct Answer

    20 cm

    Incorrect Answer
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    Explanation:

    Since, BL=CL; Hence, using Pythagoras theorem;
    152=122 + BL2; BL=9 cm. Hence, the length of base= 9*2= 18 cm

    By: MIRZA SADDAM HUSSAIN
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