Suppose you toss a dart at a circular target of radius 10 inches. Given that the dart lands in the upper half of the target, find the probability that

• it lands in the right half of the target.
• its distance from the center is less than 5 inches.
• its distance from the center is greater than 5 inches.
• it lands within 5 inches of the point [math](0,5)[/math].