Putting the Calculator to the test

Use your Casio fx-260 calculator to solve the following Geometry problem.

Maria needs to find the distance between points A and C on the following diagram. She knows that the distance between points A and B is 5 centimeters, and the distance between points B and C is also 5 centimeters. What is the distance in centimeters between points A and C? Round your answer to the nearest hundredth centimeter.

(1) 5.50 (2) 7.07 (3) 10.00 (4) 25.00 (5) 50.00