# Mensuration (IMO- Mathematics Olympiad Class 8): Questions 29 - 34 of 61

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## 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

## Question number: 31

» Mensuration

MCQ▾

### Question

Two rectangles ABCD and DBEF are as shown in the figure. The area of rectangle DBEF in square units is________.

### Choices

Choice (4) Response

a.

40

b.

90

c.

60

d.

70

## Question number: 32

» Mensuration

MCQ▾

### Question

A right cylindrical vessel is full with water, how many right cones having half diameter and height as that of right cylinder will be needed to store that water?

### Choices

Choice (4) Response

a.

12

b.

25

c.

23

d.

24

## Question number: 33

» Mensuration

MCQ▾

### Question

The radius of the cylinder whose lateral surface area is 520 and height 5 cm, is________.

### Choices

Choice (4) Response

a.

17 cm

b.

14 cm

c.

12 cm

d.

11 cm

## Question number: 34

» Mensuration

MCQ▾

### Question

Surface area of a cube with edge = 1.2 cm is________.

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page