Verified Answer :

Well hello again :3.  This is also quite simple.  The diameter of a circle is 2 times the radius.  So we can refit this into the equation and say that our new formula using diameter is \(pi(d^2/2)\).  Now we can say that 10/2 is 5 and \(5^2\) is 25.  Therefore your answer is \(25pi\) or 78.54.  


tiaaustin11

To find area you must use the formula A= pi*radius. So the radius is always 1/2 of the diameter. 10/2 is 5.So your radius is 5. multiply 5 by 3.14, to get the area of 78.54

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