The cross-section of a cannel is a trapezium in shape. If the cannel is 15 m wide at the top and 4 m wide at the bottom and the area of cross-section is 1900 sq m, the depth of cannel is?	Pick: A) 150 B) 200 C) 140 D) 240 E) 145
1/2 * d (15 + 4) = 1900   d = 200   Answer: 200
<result>B</result>
The cross-section of a cannel is a trapezium in shape. If the cannel is 15 m wide at the top and 4 m wide at the bottom and the area of cross-section is 1900 sq m, the depth of cannel is?