324
Because you multiply 9 by 36
Hello!
To find the area of a circle you use the equation

r is radius which is half the diameter
r = 2.6 / 2
r = 1.3
Put in the values you know

Square the number

The answer is

or ≈5.31
Hope this helps!
6,0 the answer above me is correct
Do you know the format? With the number next to the box, and the division number in the box? Because if you write 17 to the left, and 2397 to the right, that is how you write it. If you don't know how to divide it, I would suggest Khan Academy.