Question

the cross section of a canal is a trapezium in shape . if the canal is 12m wide at the top , 8m wide at the bottom and the area of cross section is 84centimetre square, find its depth​

Answer 1

Step-by-step explanation:

Heron's Formula

Heron's FormulaThe cross-section of a canal is in the shape of a trapezium. If the canal is 12 m wide at the top and 8 m wide at the bottom and the area of its cross-section is 84 m2, determine its depth. Hence, the depth of the canal is 8.4 m.I HOPE IT HELP US MARK M BRAINLEST PLZ

Answer 2

Answer:

8.4m

Given :- a=12m , b=8m , height =h and area of trapezium =84m

2

So, putting the respective values , we get,

Area of trapezium =

2

1

×(a+b)×h

84=

2

1

×(8+12)×h

84=

2

20h

84=10h

h=

10

84

h=8.4m