IMO- Mathematics Olympiad Class 8: Questions 483 - 487 of 1029

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Question number: 483

» Mensuration

MCQ▾

Question

A cylindrical tower is 5 meters in diameter and 10 meters height. The cost of white washing its curved surface at 25 paisa per m2 is

Choices

Choice (4) Response

a.

40

b.

37

c.

39

d.

24

Question number: 484

» Mensuration

MCQ▾

Question

The surface areas of the six faces of a rectangular solid are 1, 1, 9, 9, 25 and 25 square centimeters. The volume of the solid, in cubic centimeters is________.

Choices

Choice (4) Response

a.

20cm3

b.

12cm3

c.

15cm3

d.

11cm3

Question number: 485

» Mensuration

MCQ▾

Question

In the given figure PQRS is a square inscribed in a circle with center O and radius r. The total area of shaded region is________.

 PQRS square is inscribed in a circle with center O andradius r

PQRS Square Is Inscribed in a Circle With Center O Andradius R

Find out total area of a shaded region of inscribing square in a circle

Choices

Choice (4) Response

a.

2r2(2π)

b.

π(r22)

c.

r2(π2)

d.

4r24r

Question number: 486

» Mensuration

MCQ▾

Question

The dimensions of an open box are 60 cm, 50 cm and 33 cm. Its thickness is 3 cm. If 1 cubic cm of metal used in the box weights 0.5 gm, find the weight of the box.

Choices

Choice (4) Response

a.

13.860 kg

b.

14.56 kg

c.

12.11 kg

d.

13 kg

Question number: 487

» Mensuration

MCQ▾

Question

The volume of a cube is 343 m2 , its surface area is________.

Choices

Choice (4) Response

a.

294m2

b.

286m2

c.

291m2

d.

290m2

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