A Semielliptical Arch for a Tunnel Under a River Has

question 25

Multiple Choice

A semielliptical arch for a tunnel under a river has a width of 80 feet and a height of 30 feet (see figure) . Determine the height of the arch 2 feet from the edge of the tunnel. Round your answer to one decimal place.

• A) 30 feet
• B) 14.4 feet
• C) 9.4 feet
• D) 28 feet
• E) 39.9 feet

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