Answer:
12.57
Step-by-step explanation:
the formula for the area of a circle is 
the diameter is 2 times the radius, so dividing it by 2 gives you a radius of 2
substitute the 2 for the r in the formula and solve

4
≈12.57
Answer:
X=7 because 88=12x+4. Simple math gives you x=7
Intuitively, one would think the ball would land in the green spot 2 out of the 38 times, since there are 38 slots and 2 are green.
The probability that it lands in a green section is 2/38. Multiplying this by the number of times the experiment is performed, we get (2/38)(38) = 2.
Answer:
9
Step-by-step explanation:
W: (5,9)
X: (7,8)
Y: (9,2)
Z: (2,5)
hope this helps! tell me if i got anything wrong!