In a circle of radius 28 cm, an arc subtends an angle of 45° at the centre, then find the length of the

arc (in cm).​

Question

In a circle of radius 28 cm, an arc subtends an angle of 45° at the centre, then find the length of the

arc (in cm).​

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Adalynn 2 months 2021-08-06T07:52:09+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-08-06T07:53:39+00:00

    Sector (OAPBO) of a circle is given whose
    radius(r)=28cm
    and central angle (θ)=45

    ∴ Area of sector (A)=
    360

    πr
    2
    θ

    =
    7
    22

    ×
    360

    28×28×45

    ⇒ Area of sector =308cm
    2
    is the required area.
    solution

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