It is 9 inches because the formula for the area of a circle is πr2 where the r represents the radius of the circle
The pi can be canceled out =
πr2 and 81 π leaving with
R2 and 81
The r2 represents a square number. So square root 81 and you would result in 9 as your answer
Question: Jeremy spent $33 on 3 CDs .At this a rate how much would 5 CDs cost?
Answer: I think the answer is 55$.
Hope this helps. c;
