11.4 Use Geometric Probability

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Presentation transcript:

11.4 Use Geometric Probability Mrs. vazquez Geometry

s-cp.1.1 Essential Question: How are can I find the area of a regular polygon? Objective: Students will be able to use lengths and area to find geometric probability.

geometric probability A ratio that involves geometric measure such as length or area. Suppose segment AB contains segment CD. If point K is chosen at random, then the probability that it’s on CD is the ratio of the length of CD to the length of AB. P(K is on CD) =

geometric probability If a point were chosen at random in the square, then the probability it is in the shaded region is the ratio of the area of the triangle to the area of the square.

P is at -5, R is at -2, T is at -1, S is at 4, Q is at 5. Find the probability that a random point is located on: RT TS PT RQ

Find the probability that a random point in the square is also found in the triangle.

The diameter of the target is 80cm The diameter of the target is 80cm. The diameter of the bullseye is 16cm. Each ring is 8cm wide. Find the probability an arrow hits a black region.