Question

7 The overbridge at a road junction rises 1.5 m every 40 m on the horizontal
level. The height of the overbridge at the highest level is 9 m. It is at the
highest level for 40 m. Then the bridge slopes down at the same rate.
What is the length of the horizontal road on the ground covered by the
bridge from the beginning to the end?










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Answer 1

Answer:

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