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Find the circumference and the area of a circle with a radius of 11.2 cm. Round to the nearest tenth.
 one year ago
 one year ago
Find the circumference and the area of a circle with a radius of 11.2 cm. Round to the nearest tenth.
 one year ago
 one year ago

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Mimi_x3Best ResponseYou've already chosen the best response.1
well do you know the formula for the circumference of a circle
 one year ago

jessiesecBest ResponseYou've already chosen the best response.0
not really. I've never really been good at this.
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.1
okay so a circum of a circle is \(C = 2\pi r\)
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.1
\(r\) is given so you sub it into the formula; and calculate
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.1
nb: area of a cirlce is \(A = \pi r^2\)
 one year ago

jessiesecBest ResponseYou've already chosen the best response.0
Ok. I think I got it now. Thank you!
 one year ago
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