Question

The volume of river of width 10 m and depth 6m flowing at a speed of 2 km per hr in 1 min is .

• A. $4000m^3$
• B. $2000m^3$
• C. $8000m^3$
• D. $6000m^3$

Answer 1

The correct option is B $2000m^3$

Given that, width of river $=10m$
Depth of river $=6m$
Speed of flowing water in the river
$=2km/hr$
$=\frac{2\times 1000m}{60min}$

Now, volume of the river in $1min$
$=l\times b\times h$
$=\frac{2\times 1000\times 1}{60}\times 6\times 10$
$=2000m^3$