# Surface Area and Volumes (IMO- Mathematics Olympiad Class 9): Questions 84 - 88 of 104

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## Question number: 84

» Surface Area and Volumes

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.

## Question number: 85

» Surface Area and Volumes

MCQ▾

### Question

Volume of a hemisphere is 14564 cubic cm. The total surface area is ________

### Choices

Choice (4) Response

a.

4525.12 sq. cm

b.

1215.15 sq. cm

c.

6545.25 sq. cm

d.

3432.44 sq. cm

## Question number: 86

» Surface Area and Volumes

MCQ▾

### Question

A circular park of 60 metre diameter has a circular path just inside the boundary of width 3 metre. The area of path is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 87

» Surface Area and Volumes

MCQ▾

### Question

Volume of a hemisphere is 27500 cubic cm. The total surface area is ________.

### Choices

Choice (4) Response

a.

4158.45 sq. cm

b.

5246.89 sq. cm

c.

6548.23 sq. cm

d.

9584.12 sq. cm

## Question number: 88

» Surface Area and Volumes

MCQ▾

### Question

A cylinder and a cone have the same height and same radius of the base. The ratio between the volumes of the cylinder and the cone is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

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