A spinner with 12 equally sized slices has 3 yellow slices, 4 blue slices, and 5 red slices. The dial spun and stops on a slice at random. What is the probability that the dial stops on a yellow slice?

0.25% bhkukyukuyk

Explanation:

1. By driving 6 miles each, the cars will be 6 miles + 6 miles = 12 miles appart.

2. When one car stops and the other car makes a 90° left-hand turn and drive 8 miles, you can model the situation with a right triangle, where one leg is 12 miles, the other leg is 8 miles, and the hypotenuse is the distance that separates the cars.

Hence, you must use Pythagoras to find that distance.

3. Pythagoras