IMO- Mathematics Olympiad Class 8: Questions 488 - 493 of 1029

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Question number: 488

» Mensuration

MCQ▾

Question

A cylinder whose cross section is an ellipse is called ________ cylinder.

Choices

Choice (4) Response
a.

Elliptic

b.

Parabolic

c.

Hyperbolic

d. All of the above

Question number: 489

» Mensuration

MCQ▾

Question

If a wire is bent into the shape of a square, then the area of the square is 64 sq. cm. When the wire is bent into a semicircular shape, then the area of the semi-circle will be________.

Choices

Choice (4) Response
a.

61cm2

b. 63cm2
c.

60cm2

d.

62cm2

Question number: 490

» Mensuration

MCQ▾

Question

The volume of a cube is 729 m2 , its surface area is________.

Choices

Choice (4) Response
a.

485m2

b.

476m2

c.

480m2

d.

486m2

Question number: 491

» Mensuration

MCQ▾

Question

A metal sheet 125 cm long, 64 cm broad and 27 cm thick is melted into a cube. The difference between surface areas of two solids is________.

Choices

Choice (4) Response
a.

4605cm2

b.

4606cm2

c.

4200cm2

d.

4600cm2

Question number: 492

» Direct and Inverse Proportions

MCQ▾

Question

A can do a piece of work in 15 days and B can do alone it in 10 days. B works at it for 6 days and then leaves. A alone can finish the remaining work in________.

Choices

Choice (4) Response
a.

5 days

b.

6 days

c.

7.5 days

d.

6.5 days

Question number: 493

» Exponents and Powers

MCQ▾

Question

Which of the following values are equal?

(1) 15 (2) 50 (3) 05 (4) 51

Choices

Choice (4) Response
a.

1 and 2

b.

2 and 3

c.

1 and 3

d.

1 and 4

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