# Mensuration (IMO- Mathematics Olympiad (SOF) Class 8): Questions 24 - 30 of 61

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1029 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

## Question number: 24

» Mensuration

MCQ▾

### Question

If the area of a triangle with base a is equal to area of a square of side a, the altitude of the triangle is________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 25

» Mensuration

MCQ▾

### Question

Two cubes have their volumes in the ratio 1: 64. Find the ratio of their surface areas.

### Choices

Choice (4) Response

a.

1: 9

b.

16: 3

c.

7: 9

d.

1: 16

## Question number: 26

» Mensuration

MCQ▾

### Question

The radius of a cylinder is tripled but its lateral surface area is unchanged. Then its height must be________.

### Choices

Choice (4) Response

a.

Halved

b.

One third

c.

Doubled

d.

Constant

## Question number: 27

» Mensuration

MCQ▾

### Question

A cylindrical tower is 7 meters in diameter and 15 meters height. The cost of white washing its curved surface at 75 paisa per is

### Choices

Choice (4) Response

a.

257

b.

250

c.

240

d.

247

## Question number: 28

» Mensuration

MCQ▾

### Question

A hoop is resting vertically at staircase as shown in the diagram. AB = 8 cm and BC = 4 cm. The radius of the hoop is________.

### Choices

Choice (4) Response

a.

12 cm

b.

10 cm

c.

14 cm

d.

11 cm

## Question number: 29

» Mensuration

MCQ▾

### Question

The radius of a cylinder is doubled but its lateral surface area is unchanged. Then its height must be________.

### Choices

Choice (4) Response

a.

Constant

b.

Halved

c.

Doubled

d.

Tripled

## Question number: 30

» Mensuration

MCQ▾

### Question

Between a square of perimeter 36 cm and a circle of circumference 36 cm, which figure has larger area and by how much?

### Choices

Choice (4) Response

a.

Circle, 22

b.

Square, 22

c.

Circle, 26

d.

None of the above

f Page