Question : How much air can be held in a closed cubical box, each of whose edges is 12 metres long?
Option 1: 1278 m3
Option 2: 1872 m3
Option 3: 1827 m3
Option 4: 1728 m3
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Correct Answer: 1728 m3
Solution : Given: The edges of the cube are 12 metres long. The amount of air that can be held in a cubical box = The volume of the cube = (side)3 Now, the volume of the cube = (side)3 = 123 = 1728 m3 Hence, the correct answer is 1728 m3.
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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 : 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 length of two parallel sides of a trapezium are 25 metres and 30 metres. If its height is 20 metres, then what is the area of the trapezium?
Option 1: 420 m2
Option 2: 350 m2
Option 3: 590 m2
Option 4: 550 m2
Question : The difference between the length and breadth of a rectangle is 40 metres. If its perimeter is 96 metres, then what will be the area of the rectangle?
Option 1: 254 m2
Option 2: 110 m2
Option 3: 176 m2
Option 4: 152 m2
Question : The curved surface area of a cylinder, whose height is 10 cm, is 1320 cm2. What is the volume of this cylinder? [Use $\pi$ $\left.=\frac{22}{7}\right]$
Option 1: 1388 m3
Option 2: 0.001368 m3
Option 3: 0.1386 m3
Option 4: 0.01386 m3
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