Multiple Choice Questions on The radii of two circles are 4 5 cm and 3 5 cm respectively The distance between the centres of the ........... for CDS Exam Preparation

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Multiple Choice Questions

The radii of two circles are 4 5 cm and 3 5 cm respectively The distance between the centres of the ...........

Quantitative Aptitude (CDS) Coordinate Geometry
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    The radii of two circles are 4.5 cm and 3.5 cm respectively. The distance between the centres of the circles is 10 cm. What is the length of the transverse common tangent?

    4cm

    Incorrect Answer

    5cm

    Incorrect Answer

    6cm

    Correct Answer

    7cm

    Incorrect Answer
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    Explanation:

    Length of transverse common tangent = √ {center distance2 – (r1 + r2)2} = √ (100 - 64) = √36 = 6 cm

    By: Munesh Kumari
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