61.Find the volume , curved surface area and the total surface area of a cylinder with diameter of base 7 cm and height 40 cm.
A. 158 cm2 B. 957cm2
C.184 cm2 D.None
62.
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What is the volume of 32 metre high cylindrical tank?
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I.
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The area of its base is 154 m2.
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II.
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The diameter of the base is 14 m.
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63. Three solid cubes of sides 1 cm, 6 cm and 8 cm are melted to form a new cube. Find the surface area of the cube so formed.
A.864m B. 486cm2
C.846 Cm2 D. None
64.
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Is a given rectangular block, a cube?
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I.
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At least 2 faces of the rectangular block are squares.
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II.
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The volume of the block is 64.
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65. If the capacity of a cylindrical tank is 1848 m3 and the diameter of its base is 14 m, then find the depth of the tank.
A. 21m B.15m
C. 12m D.5m
66.
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What is the capacity of a cylindrical tank?
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I.
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Radius of the base is half of its height which is 28 metres.
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II.
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Area of the base is 616 sq. metres and its height is 28 metres.
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67. How many iron rods, each of length 7 m and diameter 2 cm can be made out of 0.88 cubic metre of iron?
A. 400 B.40
C.4000 D.10
68.
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What is the height of a circular cone?
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I.
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The area of that cone is equal to the area of a rectangle whose length is 33 cm.
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II.
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The area of the base of that cone is 154 sq. cm.
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69. Find the slant height, volume, curved surface area and the whole surface area of a cone of radius 21 cm and height 28 cm.
A. 35m B.55m
C.48m D.18m
70.
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What is the volume of a cube?
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I.
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The area of each face of the cube is 64 square metres.
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II.
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The length of one side of the cube is 8 metres.
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