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Jaidyn Franco
Mathematics
18 May, 02:37
The circumfrence of a circle is 16TT
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Boo Bear
18 May, 02:43
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The formula for a circumference of a circle is: C=2π r
and we are given the answer as
C=16 π
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=64 π or (assuming you want π to two decimal places: 3.14 then) 200.96
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