Question : How many litres of water can a hemispherical bowl of diameter 21 m hold? (1 m³ =1000 litres)

Option 1: 2100000 litres

Option 2: 2425500 litres

Option 3: 2322500 litres

Option 4: 2250500 litres

Question : Find $\frac{1}{21}$th of the volume of a hemisphere whose radius is 4.2 m.

Option 1: 6.6 m³

Option 2: 7.3 m³

Option 3: 8.2 m³

Option 4: 7.1 m³

Question : The diameter of a sphere is 14.7 metres. What will be the volume of the sphere?

Option 1: 1663.893 m³

Option 2: 1873.487 m³

Option 3: 1693.563 m³

Option 4: 1783.723 m³

Question : In a 255-litre mixture of milk and water, the ratio of milk and water is 4 : 1. Find the quantity of water required to make the ratio of milk and water 4 : 3.

Option 1: 94 litres

Option 2: 51 litres

Option 3: 102 litres

Option 4: 55 litres

Question : The area of the base of a rectangular tank is 70 m² and the volume of water contained in it is 2800 m³. What is the depth of the water?

Option 1: 30 m

Option 2: 40 m

Option 3: 50 m

Option 4: 60 m

Question : A mixture of 500 litres of alcohol and water contains 20 percent water. How much more water should be added to this so that the water will become 50 percent in the new mixture?

Option 1: 300 litres

Option 2: 400 litres

Option 3: 350 litres

Option 4: 450 litres