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RideAnS [48]
3 years ago
15

The area of the circle above is 1,962.5 units2. What is the circumference of the circle? Use = 3.14.

Geography
1 answer:
Elodia [21]3 years ago
8 0
Formula for area:
\pi r^{2}
Formula for circumference 
2 \pi r

1,962.5 /\pi = 625
Now we find the cube root of 625 (because r^{2} is r x r)
25 x 25 = 625
25 is radius
2 (25^{2})\pi

50  x pi = 
157 cm^{2}
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