Question

find the area and circumference of circle whose diameter is 9 CM​

Answer 1

area = πr²

area=22\7*9*9

area=254'57

cicumference=2πr

circumference=2*22\7*9

= 56' 57

area= 254'57 circumference=56'57

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Answer 2

circumference = πd=[22/7]×9=28.3 cm

area=πr^2=28.3 cm^2