SOLUTION: The opening of the a cave 20 feet wide is in the shape of semi ellipse. If the height of the opening is 15 feet at the center, how high is the opening 5 feet from the center?
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-> SOLUTION: The opening of the a cave 20 feet wide is in the shape of semi ellipse. If the height of the opening is 15 feet at the center, how high is the opening 5 feet from the center?
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Question 1019412: The opening of the a cave 20 feet wide is in the shape of semi ellipse. If the height of the opening is 15 feet at the center, how high is the opening 5 feet from the center? Answer by robertb(5830) (Show Source):
You can put this solution on YOUR website! Making the center of floor entrance correspond to the origin (0,0), the semi-ellipse would follow the equation
5 feet from the center, x = 5, and after substitution gives
==>
<==>
==> after taking the positive square root.
y = 12.99 feet, or 13 feet approximately.
