Question

The cross-section of a canal is in the form of a trapezium. If the top of canal is 15 m
wide, the bottom is 8 m and the area of cross-section is 138 m², find its depth.​

Answer 1

Answer:

As we know the area of trapezium =

2

1

×(sum of parallel side)×height

72m

2

=

2

1

×(10+6)×depth

72m

2

=

2

1

×16×depth

72m

2

=8×depth

Depth =

8

72

Depth =9m

Answer 2

Answer:

the above answer is roght