Question 1198145
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A bowl is 2/5 filled with water. △ABC is a right triangle, where AC is the radius of the bowl. 
If AB=10 cm, then what is the depth of the water, in cm?
Diagram: https://ibb.co/zSwp1Jy
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Formulation of this problem in the post is terrible.


How triangle ABC is logically or physically connected with the water in the bowl ?



How this problem is worded, it really scares and perplexes me . . . 



It looks more like a horror movie than a Math problem . . . 



The post by @MathLover1 is  INADEQUATE  and  INCORRECT  solution,
which must be ignored.