# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 878 - 883 of 989

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## Question number: 878

Edit

### Question

MCQ▾

A cylindrical vessel of diameter 72 cm has some water in it. A cylindrical iron piece of diameter 12 cm and height 36 cm is dropped in it. After it was completely immersed, the raise in the level of water is ________.

### Choices

Choice (4)Response

a.

3 cm

b.

6 cm

c.

1 cm

d.

9 cm

## Question number: 879

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### Question

MCQ▾

With a bucket of radius 28 cm and height 2 cm, 6 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: 880

Mathematics
Edit

### Question

MCQ▾

The value of the surd is

### Choices

Choice (4)Response

a.

b.

8

c.

d.

## Question number: 881

Mathematics
Edit

### Question

MCQ▾

The base of an isosceles triangle is 14 cm and its perimeter 108 cm. Then its area is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 882

Edit

### Question

MCQ▾

Correct the perimeter of the figure given below to one decimal place.

Image Title: Image of a rectangle with quarter cut at all four corners

Image Description: Representing the image of a rectangle with quarter cut at all four corners

### Choices

Choice (4)Response

a.

28.0 m

b.

28.3 m

c.

29.3 m

d.

29.1 m

## Question number: 883

Mathematics
Edit

### Question

MCQ▾

The sum of a rational and an irrational number is

### Choices

Choice (4)Response

a.

A rational number

b.

An integer

c.

A whole number

d.

An irrational number