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Name Class Date Practice 10-8 Geometric Probability Use the dartboard at the right for Exercises 1–3. 24 in. 1. If a dart hits the board, find the probability that it will land in region X. 2. If a dart hits the board, find the probability that it will land in region Y. 24 in. X Y Z 3. If a dart hits the board, find the probability that it will land in region Z. All rights reserved. 4 in. 6 in. 8 in. Find the probability that a point chosen at random from AK is on the given segment. A B C D E F G H I J K 0 2 4 6 8 10 12 14 16 18 20 4. CF 5. BI 6. GK 7. FG 8. AK 9. AC © Pearson Education, Inc., publishing as Pearson Prentice Hall. 10. Roberto’s trolley runs every 45 minutes. If he arrives at the trolley stop at a random time, what is the probability that he will not have to wait more than 10 minutes? 11. The state of Connecticut is approximated by a rectangle 100 mi by 50 mi. Hartford is approximately at the center of Connecticut. If a meteor hit the earth within 200 mi of Hartford, find the probability that the meteor landed in Connecticut. 12. A stop light at an intersection stays red for 60 seconds, changes to green for 45 seconds, and then turns yellow for 15 seconds. If Jamal arrives at the intersection at a random time, what is the probability that he will have to wait at a red light for more than 15 seconds? In each figure, a point between A and B on the number line is chosen at random. What is the probability that the point is between C and D? A 13. 15. C D B 4 2 0 2 A C D B 2 0 2 Geometry Chapter 10 14. 16. 4 A C D B 10 0 10 20 A C D B 3 0 3 6 Lesson 10-8 Practice 9