Mensurationhard · Past Paper
A river 3m deep and 40m wide is flowing at the rate of 2 km/hr. How much water falls into the sea in a minute?
A4000 cubic m
B8000 cubic m
C2000 cubic m
D6000 cubic m
✓ Correct Answer: A — 4000 cubic m
Speed = 2000 m / 60 min. Volume per min = depth * width * (speed per min) = 3 * 40 * (2000/60) = 4000 cubic m.
Share this question
More from Mensuration
- The ratio of the radii of two spheres is 2:3. What is the ratio of their volumes?
- A metal cylinder of radius 4 cm and height 10 cm is melted to form spheres of radius 2 cm each. How many spheres can be made?
- What is the volume of a cube with a side length of 5 cm?
- The radius and height of a cone are in the ratio 3:4. If its curved surface area is 188.4 cm², find its radius (Take π = 3.14).
- What is the area of a rectangle whose length is 15 cm and breadth is 10 cm?