Answer: 247in
Explanation:
Area of a circle is pi radius squared.
So that'll be 3.14 times 9 (because radius is halve if a diameter) squared.
First using Order of Operations squaring the 9, so that'll be 81.
Lastly you multiply π or 3.14.
So 81 x 3.14 is 247. Which is rounded down to the nearest whole number.
Happy Solving.