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is3535
 one year ago
What is the exact area of a circle whose diameter is 18 cm?
is3535
 one year ago
What is the exact area of a circle whose diameter is 18 cm?

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Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1radius = diameter/2 Area of circle = pi*(radius)^2

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1yup! I'm not sure why it doesn't match with any of the 4 answer choices, though....

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1is 81pi one of the answer choices?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.1great, that should be the answer! remember, after you multiply 9*9*pi, you get 81pi. sometimes you can just leave it like that
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