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Home > INT3 > Chapter 8 > Lesson 8.3.3 > Problem 8-136


In one of the games at the County Fair, people pay to shoot a paint pistol at the target shown at right. The center has a radius of one inch. Each concentric circle has a radius one inch larger than the preceding circle. Assuming the paint pellet hits the target randomly, what is the probability it hits:

  1. The point ring?

    What is the area of the point ring?
    What is the area of the whole target?

  2. The point ring?

    Calculate the area of the circle around the point ring.
    Then subtract the area of the point ring.

Circle with 3 rings, & a center smaller circle, from center to outside ring, are sections of a ray, labeled 1" for inner circle & 1" for each ring. The rings are labeled, starting on the inside circle & going out, 50 pts, 20 pts, 10 pts, 5 pts.