Surface Area and Volumes (IMO Mathematics Olympiad (SOF) Class 9): Questions 69  75 of 104
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Question number: 69
» Surface Area and Volumes
Question
Two cubes each of volume are joining end to end. Find the surface area of the resulting cuboid.
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Question number: 70
» Surface Area and Volumes
Question
Two cylinders of same volume have their heights in the ratio 1: 3. Find the ratio of their radii?
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Question number: 71
» Surface Area and Volumes
Question
A cylindrical vessel 60 cm in diameter is partially filled with water. A sphere, 60 cm in diameter is gently dropped into the vessel. To what further height will water rise in the cylinder?
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Choice (4)  Response  

a.  25 cm 

b.  15 cm 

c.  30 cm 

d.  40 cm 

Question number: 72
» Surface Area and Volumes
Question
What change in percent is made in the area of a rectangle by decreasing its length and increasing its breadth by ?
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Question number: 73
» Surface Area and Volumes
Question
The heights of two cones are in the ratio of 3: 8 and their radius in the ratio 5: 3. Then the ratio of their volumes is ________
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Question number: 74
» Surface Area and Volumes
Question
The area of rhombus is and one of its diagonals is 8 cm. its perimeter is ________
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Question number: 75
» Surface Area and Volumes
Question
The largest sphere is cut off from a cube of side 8 cm. the volume of the sphere will be ________
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