Question

The cross-section of a canal is shown in figure (iii) given below. If the canal is
8 m wide at the top and 6 m wide at the bottom and the area of the cross-section is
16.8 m², calculate its depth.​

Answer 1

Answer:

2.4 m

Step-by-step explanation:

the cross section is trapezium whose area is given by

area = 1/2*(sum of parallel sides)*depth (or height as the case may be)

thus,

1/2(8+6)*depth = 16.8

1/2*14*depth = 16.8

7*depth = 16.8

depth = 16.8/7

= 2.4 m

Answer 2

Step-by-step explanation:

apply the formula of area of trapezium, then depth can be calculated.

Ans. 2.4m