find the circumference and area of circle of radius 9 CM ​

Question

find the circumference and area of circle of radius 9 CM ​

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Ruby 2 weeks 2021-09-07T06:36:50+00:00 2 Answers 0 views 0

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    0
    2021-09-07T06:38:21+00:00

    Answer:

    Area of a circle is πr^2

    so the area of this circle will be 22/7 * 81 which is 254.57 cm^2

    Circumference is 2πr which will be 2 * 22/7 * 9

    =56.57 cm

    Do mark it as brainliest

    0
    2021-09-07T06:38:43+00:00

    Answer:

    56.52 cm   and   254.34cm^2

    Step-by-step explanation:

    Circumference of circle =2 pie r

    radius=9cm

    putting the radius in the formula:-

    =2 pie r

    =2 pie 9

    =2 x 3.14 x 9

    =18 x 3.14

    =56.52 cm

    Therefore ,the circumference of circle= 56.52 cm

    Area of the circle= pie r^2

    radius=9cm

    putting the radius in formula

    =pie r^2

    =3.14 x (9)^2

    =3.14 x 81

    =254.34 cm^2

    Therefore the Area of the circle = 254.34 cm^2

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