Not getting any of this

Answer:
Step-by-step explanation:
Area of a circle = pie r squared
But we haven't gotten the radius yet so to find radius, we have to divide the diameter by two.
Which is 9 ÷2 = 4.5
So now we have 4.5 as our radius so lets solve for the area now.
Now area = Pie r squared
And pie is 3.142×4.5×4.5
Our final answer becomes 59.38m