Answer :
Final answer:
The height of the demonstration calculator can be found by adding up the rebound heights of the ball.
Explanation:
The height of the demonstration calculator can be calculated by considering the rebound heights of the ball. Each time the ball bounces, it reaches a lower height. We can use the information given to calculate the total height by adding up all the rebound heights: 1 m + 0.8 m + 0.5 m + 0.2 m = 2.5 meters. Therefore, none of the given options (A, B, C, D) are the correct height.
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