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Standard VIII
Mathematics
Area of Trapezium by Division into Shapes of Known Area
The cross sec...
Question
The cross section of a canal is trapezium. If width of the upper side is
10
m and that of base is
6
m and cross section area of the canal is
72
m
2
, find its depth.
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Solution
Let depth
=
h
cross section area
=
72
1
2
h
(
10
+
6
)
=
72
h
2
×
16
=
72
h
×
8
=
72
h
=
9
∴
d
e
p
t
h
=
9
m
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