Find the radius $ r $ of a circle if area $A = 25$.
Answer
$r = 2.8209$
Explanation
To find radius $ r $ use formula:
After substituting $ A = 25 $ we have:
$$ A = r^2 \cdot \pi $$ $$ r^2 \cdot \pi = 25 $$ $$ r = \sqrt{ \frac{ 25 }{\pi} } $$ $$ r \approx 2.8209 $$This page was created using
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