# IMO- Mathematics Olympiad Class 9: Questions 421 - 424 of 919

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## Question number: 421

MCQ▾

### Question

A rectangular field has its length and breadth in the ratio. Its area is 10.29 hectares. The cost of fencing it at RS. 8 per meter is ________

### Choices

Choice (4) Response

a.

Rs. 15400

b.

Rs. 14200

c.

Rs. 11200

d.

Rs. 21500

## Question number: 422

MCQ▾

### Question

The volume of the largest circular cone that can be cut of a cube whose edge is 16 cm is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 423

MCQ▾

### Question

In the figure , and . Then x equals ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 424

MCQ▾

### Question

From each corner of a square of side 6 cm a quadrant of a circle of radius 2 cm is cut and also a circle of diameter 4 cm is cut as shown in the figure, then the area of the remaining portion of the square is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

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