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4th Class Mathematics Geometry Question Bank Geometry

  • question_answer
    Direction: Observe the given figure.
    The radius of a circle is increased by 2 cm. How does its diameter change?

    A)  Increases by 4 cm

    B)    Increases by 2 cm      

    C)  Decreases by 2 cm

    D)    Decreases by 4 cm

    Correct Answer: A

    Solution :

    Diameter = 2r Diameter after increasing its radius by \[\text{2 cm}=\text{ 2(r }+\text{ 2) }=\text{ 2r }+\text{ 4 cm}\] \[\therefore \] Diameter increases by 4 cm


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