IMO- Mathematics Olympiad Class 8: Questions 431 - 436 of 1029

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Question number: 431

» Algebraic Expressions and Identities

MCQ▾

Question

The perimeter of a triangle is 5p22p+1 and two of its sides are p2p+1 and 2p22p+3 . Find the third side of the triangle.

Choices

Choice (4) Response

a.

5p22p+1

b.

2p22p1

c.

2p2+2p+3

d.

2p2+p3

Question number: 432

» Rational Numbers

MCQ▾

Question

A hoop is resting vertically at staircase as shown in the diagram. AB = 12 cm and BC = 6 cm. The radius of the hoop is________.

 the radius of the hoop that is resting vertically at staircase

the Radius of the Hoop That Is Resting Vertically at Staircase

A hoop resting vertically at stair case and AB = 12 cm, BC = 6 cm is given

Choices

Choice (4) Response

a.

11 cm

b.

10 cm

c.

15 cm

d.

12 cm

Question number: 433

» Mensuration

MCQ▾

Question

Find the surface area of a cylinder with diameter of base 5 cm and height 30 cm.

Choices

Choice (4) Response

a.

505 cm2

b.

510 cm2

c.

511 cm2

d.

610 cm2

Question number: 434

» Mensuration

MCQ▾

Question

Two rectangles ABCD and DBEF are as shown in the figure. The area of rectangle DBEF in square units is________.

 Two rectangles ABCD and DBEF with AB = 8 and AD = 15 are given

Two Rectangles ABCD and DBEF With AB = 8 and AD = 15 Are Given

Find out the area of DBEF using given measure (AB = 8 and AD = 15)

Choices

Choice (4) Response

a.

120

b.

90

c.

160

d.

140

Question number: 435

» Mensuration

MCQ▾

Question

Two cubes have their volumes in the ratio 1: 8. Find the ratio of their surface areas.

Choices

Choice (4) Response

a.

1: 9

b.

5: 3

c.

1: 4

d.

7: 9

Question number: 436

» Mensuration

MCQ▾

Question

A child walked 17 m to cross a rectangular field diagonally. If breadth of field is 8 m, its length is________.

Choices

Choice (4) Response

a.

12 m

b.

15 m

c.

20 m

d.

11 m

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