# MO SK/CZ Z9–I–3

John had the ball that rolled into the pool and it swam in the water. Its highest point was 2 cm above the surface. Diameter of circle that marked the water level on the surface of the ball was 8 cm. Determine the diameter of John ball.

Result

D =  10 cm

#### Solution:

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Math student
I need more explanation as to where these equations are coming from.

#### To solve this example are needed these knowledge from mathematics:

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