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Doss [256]
3 years ago
7

The circumfrence of a circle is 16TT

Mathematics
1 answer:
Butoxors [25]3 years ago
7 0
The formula for a circumference of a circle is: C=2π<span>r
and we are given the answer as
C=16</span><span>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: </span>A=πr^<span>2
Since we know r = 8 we just sub it into the equation

A=</span><span>π*8^2
A=64</span><span>π  or (assuming you want π to two decimal places: 3.14 then) 200.96</span>
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