The cross-section of a cannel is a trapezium in shape. If the cannel is 10 m wi

Question

The cross-section of a cannel is a trapezium in shape. If the cannel is 10 m wide at the top and 6 m wide at the bottom and the area of cross-section is 640 sq m, the depth of cannel is?

Options:

A . 20 m

B . 60 m

C . 40 m

D . 80 m

Answer: Option D

1/2 * d (10 + 6) = 640

d = 80

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