# Mathematics-Surface Areas & Volumes (NSTSE (National Science Talent Search Exam- Unified Council) Class 9): Questions 1 - 6 of 113

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## Question number: 1

» Mathematics » Surface Areas & Volumes

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### Question

A cylindrical rod whose height is 4 times of its radius is melted and recast into spherical balls of same radius. The number of balls will be

### Choices

Choice (4) Response

a.

12

b.

2

c.

6

d.

3

## Question number: 2

» Mathematics » Surface Areas & Volumes

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### Question

The cost of painting the TSA of cone at is Rs. 35.2. The volume of the cone its slant height being 50 cm is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 3

» Mathematics » Surface Areas & Volumes

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### Question

With a bucket of radius 14 cm and height 8 cm, 2 buckets of lime was poured to form a conical heap. If its area is , the canvas required to cover it is ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 4

» Mathematics » Surface Areas & Volumes

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MCQ▾

### Question

The lateral surface area of cylinder is and base area . Then its volume is ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 5

» Mathematics » Surface Areas & Volumes

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MCQ▾

### Question

With a bucket of radius 7 cm and height 4 cm, 4 buckets of lime was poured to form a conical heap. If its area is , the canvas required to cover it is ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 6

» Mathematics » Surface Areas & Volumes

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MCQ▾

### Question

From a circle of radius 30 cm a sector with angle is cut out and its bounding radii are bent so as to form a cone. Then its volume is

### Choices

Choice (4) Response

a.

b.

c.

d.

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