Mathematics-Circles [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 1 - 4 of 99

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Question number: 1

» Mathematics » Circles

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Question

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

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 2

» Mathematics » Circles

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Question

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 number: 3

» Mathematics » Circles

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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 number: 4

» Mathematics » Circles

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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.

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