# IMO- Mathematics Olympiad Class 8: Questions 485 - 489 of 1029

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## Question number: 485

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________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 486

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

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 488

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

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.

b.

c.

d.

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