An observation tower is to be constructed on top of Quezon Hill 420 m. amsl. A 3.75 m.  tower was constructed at Aurora Hill 507 m. amsl, 30 km. from Quezon Hill. Another 7.00 m. tower was constructed at Mirador Hill 420 m. amsl, 20 km. from Quezon Hill. Compute the height of tower to be constructed at Quezon Hill which is in between Aurora and Mirador Hills so that the three hills will be intervissible.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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An observation tower is to be constructed on top of Quezon Hill 420 m. amsl. A 3.75 m. 
tower was constructed at Aurora Hill 507 m. amsl, 30 km. from Quezon Hill. Another 7.00 m. tower was constructed at Mirador Hill 420 m. amsl, 20 km. from Quezon Hill. Compute the height of tower to be constructed at Quezon Hill which is in between Aurora and Mirador Hills so that the three hills will be intervissible. What is your recommendation? Show your solutions with Illustrations.

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