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A hall 160 feet in length is to be designed as a whispering gallery. if the foci are located 20 feet from the center, how high will the ceiling be at the center?

Respuesta :

The answer is 77.45 feet .

Half length of hall = 160 / 2 = 80 feet

Height of ceiling from centre = √Half Length of hall² - Foci length from  center²

Height of ceiling from center = √80² - 20²

Height of ceiling from centre = √6400 -400

Height of celling from centre = √6000

Height of ceiling from centre =77.45 feet (Approx.)

What is height ?

  • Height, altitude, and elevation all refer to the vertical distance between something's top and bottom or its base and something above it.
  • Height is used to describing everything that may be measured vertically, high or low.

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