# Mathematics-Circles [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 1 - 6 of 99

Access detailed explanations (illustrated with images and videos) to 2000 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access, Unlimited Time, on Unlimited Devices!

View Sample Explanation or View Features.

Rs. 550.00 -OR-

How to register? Already Subscribed?

## Question 1

Edit

### Question

MCQ▾

O is the center of a circle and if then is equal to

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 2

Edit

### Question

MCQ▾

A chord of a circle is 8 cm in length and its distance from the center is 3 cm. Find the length of the chord of the same circle which is at a distance of 4 cm from the center.

### Choices

Choice (4)Response
a.10 cm
b.12 cm
c.6 cm
d.8 cm

## Question 3

Edit

MCQ▾

The diameter is

### Choices

Choice (4)Response
a.Three times radius of circle
b.Smallest chord of a circle
c.Greatest chord of a circle
d.None of the above

## Question 4

Edit

### Question

MCQ▾

A regular nonage (9 sides) is inscribed in a circle. The angle that each side of the decagon subtends at the center is

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 5

Edit

### Question

MCQ▾

The radius of a circle is 2.5 cm. AB and CD are two parallel chords 2.7 cm apart. If cm then CD is equal to

### Choices

Choice (4)Response
a.5.2 cm
b.3 cm
c.7.3 cm
d.8 cm

## Question 6

Edit

### Question

MCQ▾

AB is a chord of a circle of radius 3.4 cm and P is a point on it which divided it into two parts in the ratio 3: 5. If P is 2.7 cm distant from the center O, the length of AB is

### Choices

Choice (4)Response
a.4.24 cm
b.9.16 cm
c.5.9 cm
d.2.12 cm