Multiple Choice Questions on A B C are three points on the circumference of a circle and if AB AC 5 radic 2cm and ang BAC 90 deg ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A B C are three points on the circumference of a circle and if AB AC 5 radic 2cm and ang BAC 90 deg ...........

Quantitative Aptitude ( CCS) Geometry
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    A, B, C are three points on the circumference of a circle and if (AB) =(AC)=5√2cm and ∠BAC = 90°, find the radius.

    4 cm

    Incorrect Answer

    8 cm

    Incorrect Answer

    10 cm

    Incorrect Answer

    5 cm

    Correct Answer
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    Explanation:


    ∠BAC = 90°  AB = AC =5√2 cm 
    In right angle ?BAC  
    By using Pythagoras theorem  
    BC2=AB2+AC2
    BC2=(5√2)2+(5√2)2
    BC2=50+50
    BC2=100
    BC = 10 cm 
    ∴ Radius =BC/2
    Radius =10/2 = 5 cm 

    By: MIRZA SADDAM HUSSAIN
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