The cross-section of a cannel is a trapezium in shape. If the cannel is 8 m wide at the top and 2 m wide at the bottom and the area of cross-section is 770 sq m, the depth of cannel is?
Choose the correct choice from the following options: A) 150 B) 152 C) 154 D) 156 E) 158
1/2 * d (8+2)   = 770   d = 154   Answer: 154
<result>C</result>
The cross-section of a cannel is a trapezium in shape. If the cannel is 8 m wide at the top and 2 m wide at the bottom and the area of cross-section is 770 sq m, the depth of cannel is?