# Surface Area and Volumes (IMO- Mathematics Olympiad (SOF) Class 9): Questions 64 - 68 of 104

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## Question number: 64

» Surface Area and Volumes

MCQ▾

### Question

A cylindrical rod whose height is 8 times of its radius is melted and recast into spherical balls of same radius. The numbers of balls will be________

### Choices

Choice (4) Response

a.

3

b.

6

c.

4

d.

8

## Question number: 65

» Surface Area and Volumes

MCQ▾

### Question

The area of a quadrilateral, one of whose diagonals is 50 cm long and the perpendiculars from the other two vertices are 14 cm and 21 cm respectively is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 66

» Surface Area and Volumes

MCQ▾

### Question

A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the park has been used as a lawn. The area of the lawn is 2109 sq. m. What is the width of the road?

### Choices

Choice (4) Response

a.

3 m

b.

6 m

c.

7 m

d.

2 m

## Question number: 67

» Surface Area and Volumes

MCQ▾

### Question

The base of a prism is a triangle whose sides arc of lengths 13 cm, 20 cm and 21 cm. if the height of the prism be 9 cm. find the area of total lateral surface, volume of the prism

### Choices

Choice (4) Response

a.

1543 c. cm.

b.

1134 c. cm.

c.

1754 c. cm.

d.

1865 c. cm.

## Question number: 68

» Surface Area and Volumes

MCQ▾

### Question

A rectangle is divided into five smaller rectangles, as shown in the figure. Four of them have areas, , and as indicated. Then the area of the shaded rectangle is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page