# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 276 - 280 of 989

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## Question number: 276

» Mathematics » Circles

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MCQ▾

### Question

A chord of a circle is 80 cm in length and its distance from the center is 9 cm. Find the length of the chord of the same circle which is at a distance of 40 cm from the center.

### Choices

Choice (4)Response

a.

18 cm

b.

36 cm

c.

9 cm

d.

20 cm

## Question number: 277

» Mathematics » Lines and Angles

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MCQ▾

### Question

Can 5 cm, 7 cm, 3 cm form a triangle?

### Choices

Choice (4)Response

a.

Yes

b.

No

c.

Sometimes

d.

All of the above

## Question number: 278

» Mathematics » Lines and Angles

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MCQ▾

### Question

At 6 O’clock the angle formed between the hands of a clock is

### Choices

Choice (4)Response

a.

Obtuse angle

b.

Right angle

c.

Acute angle

d.

Straight angle

## Question number: 279

» Mathematics » Lines and Angles

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MCQ▾

### Question

If two lines l and m are perpendicular to each other then they are symbolically written as

### Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

## Question number: 280

» Mathematics » Lines and Angles

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MCQ▾

### Question

In the above figure and are called

### Choices

Choice (4)Response

a.

Corresponding

b.

Alternate

c.

Vertically opposite

d.

All of the above

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