Is is actually quite easy if you think about it! The formula for finding the area of a circle is: Area= pi x r2 Or in this case, Pi (3.14) x the radius squared. In the picture above, the radius (Half of the diameter) is 3 units. 3x3 = 9 Now all that is left is to multiply it by pi! 9 x 3.14 = 28.26 So the answer is 28.26, or C! Hope this helped :)!