Question

# The cross section of a canal is atrapezium in shape. If the canal is 10m wide at the top and 6m wide at the bottom and the area of the cross section is 840 sq. m, find the depth of the canal ?

Hint:

### Now , find the area of Trapezium = ½ height × (sum of lengths of parallel sides).

We know the sum of lengths of parallel sides and area of trapezium .Find height from bottom /depth from top .

## The correct answer is: 105 m

### Ans :- 105 m.

Explanation :-

Given the parallel sides of trapezium are 10 cm and 6 cm.

Sum of lengths of parallel sides =10+6 =16 cm

Area of trapezium = 840 sq.m

Let height or depth of cross section be h m

Therefore ,the depth of the canal is 105 m.

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