Mathematics
carlhunt255
9

The circumfrence of a circle is 16TT

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Unsmartperson

The formula for a circumference of a circle is: C=2πr and we are given the answer as C=16π Therefore we know that 16 is from the combination of multiplying 2 and r So to find r we do the opposite of what is done. The opposite of multiplying is dividing, therefore: 16/2=8 therefore r = 8 The formula for the area of a circle is: A=πr^2 Since we know r = 8 we just sub it into the equation A=π*8^2 A=64π  or (assuming you want π to two decimal places: 3.14 then) 200.96

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