PDF chapter test TRY NOW

1. A conical container is fully filled with petrol. The radius is \(10\) \(m\), and the height is \(15\) \(m\). If the container can release the petrol through its bottom at the rate of \(25\) cu. meter per minute, in how many minutes the container will be emptied. Round off your answer to the nearest minute.
 
Answer:
 
Time taken to empty the container \(=\)  minutes
 
 
2. A right-angled triangle whose sides are \(6\) \(cm\), \(8\) \(cm\) and \(10\) \(cm\) is revolved about the sides containing the right angle in two ways. Find the difference in volumes of the two solids so formed.
 
Answer:
 
The difference in the volume of two solids \(=\)  \(cm^3\)
 
[Note: Round off your answer up to two decimal places.]
 
 
3. The volumes of two cones of same base radius are \(3600\) \(cm^3\) and \(5040\) \(cm^3\). Find the ratio of heights.
 
Answer:
 
The ratio between the height of two cones \(=\) i:i
 
[Note: Enter the simplified ratio]