Surface Area and Volumes (IMO- Mathematics Olympiad Class 9): Questions 37 - 41 of 104

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Question number: 37

» Surface Area and Volumes

MCQ▾

Question

The volume of a sphere is 8821×213cm3 the curved surface of its sphere is ________

Choices

Choice (4) Response

a.

2424cm2

b.

5544cm2

c.

2484cm2

d.

5446cm2

Question number: 38

» Surface Area and Volumes

MCQ▾

Question

The area of a quadrilateral PQRS, in which PQS=90˚ , QRS is an equilateral triangles of side 12 cm and PS=15cm is________.

Choices

Choice (4) Response

a.

416.35cm2

b.

216.49cm2

c.

316.41cm2

d.

116.35cm2

Question number: 39

» Surface Area and Volumes

MCQ▾

Question

If the altitude of an equilateral triangle is 56cm , its area is ________

Choices

Choice (4) Response

a.

613cm2

b.

473cm2

c.

602cm2

d.

503cm2

Question number: 40

» Surface Area and Volumes

MCQ▾

Question

A bus stop is barricaded from the remaining part of the road, by using 75 hollow cones made of recycled cardboard. Each cone has a base diameter of 60 cm and height 1 m. If the outer side of each of the cones is to be painted and the cost of painting is Rs. 17 per m2, what will be the cost of painting all these cones? (Use π=3.14 and take 1.03=1.02 )

Choices

Choice (4) Response

a.

Rs. 1645

b.

Rs. 1742

c.

Rs. 1224

d.

Rs. 1586

Question number: 41

» Surface Area and Volumes

MCQ▾

Question

The volume of the largest circular cone that can be cut of a cube whose edge is 8 cm is ________

Choices

Choice (4) Response

a.

134.09cm3

b.

132.09cm3

c.

131.09cm3

d.

133.09cm3

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