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Jagdish Yadav

· started a discussion

· 1 Months ago

Question is conceptually wrong (Question: 108007.0 )

this solution can only be justified if bottom and top are square. Please do mention details. In all the papers around 10 questions have issues.

Question:

A canal is 5 mtr. wide at bottom and 8 mtr. wide at top. The depth of water is 4 mtr. Water is flowing in the canal with the speed of 10 mtr./second. How much cubic mtr. of water will flow in 1 minute?

Options:
A) 7800
B) 15,600
C) 23,400
D) 11,700
Solution:
Ans: (b) Area of the base \(\cfrac{1}{2}\) (sum of parallel sides) × Height

= \(\cfrac{1}{2}(8+5)\times4=26\) m2

\(\because\) Speed of water = 10 m/sec.

\(\therefore\) Volume of water = 26 × 10 × 60 = 15600 m3

Knowledge Expert

· commented

· 1 Months ago

Dear Student, According to given instruction if we frame the image there are parallel sides are different and and depth means perpendicular distance between parallel lines thus the shape is trapezium and we use given formula to calculate area. Keep learning with us! Best wishes Team Toprankers

Baba Shankateswar Samantaray

· commented

· 1 Months ago

This question is perfect. Just try to imagine.
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