Question

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

Answer 1

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

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Answer 2

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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