# If a canal is 10m wide at top and 6m wide at bottom and area of cross-section is 640 m^2. What is the height of canal?

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If the canal is 10 m wide at the top and 6 m wide at bottom and the area of cross-section is 640 m^2. What is the length of canal is (The cross-section of a canal is a trapezium in shape)?

posted Jan 26, 2016

Length of canal or height of canal?
Area=[(a+b)/2]*h.........................Trapezium formula
640=[(10+6)/2]*h
h=80m
Ans:Length(height) of canal is 80m

good assumption. The puzzle poser may not have realised disclarity in his puzzle.

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