Surface Area and Volumes [IMO Level 1- Mathematics Olympiad (SOF) Class 9]: Questions 24 - 29 of 105

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Question 24

Question MCQ▾

The ratio between the length and the breadth of a rectangular park is . If a man cycling along the boundary of the park at the speed of 15 km/hr completes one round in 12 minutes, then the area of the park is________

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Choice (4)Response

a.

b.

c.

d.

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Question 25

Question MCQ▾

The number of spherical balls each 4 cm in diameter be made out of a rectangular solid is ________

Choices

Choice (4)Response

a.

107

b.

105

c.

102

d.

109

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Question 26

Question MCQ▾

The ratio between the perimeter and breadth of rectangle is . If the area of the rectangle is 116 sq. cm. then length of the rectangle is ________

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Choice (4)Response

a.

b.

c.

d.

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Question 27

Question MCQ▾

The volume of a sphere is the curved surface of its sphere is ________

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Choice (4)Response

a.

b.

c.

d.

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Question 28

Question MCQ▾

The radii of two cones are in ration 3: 1, their volumes are equal. Find the ratio of their heights.

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Choice (4)Response

a.

b.

c.

d.

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Question 29

Question MCQ▾

A solid consists of a circular cylinder with an exact fitting right circular cone placed on the top. The height of a the cone is h. If the total volume of the solid is three times the volume of the cone, then the height of the cylinder is ________

Choices

Choice (4)Response

a.

b.

c.

d.

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