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

Circle c Circle c: Circle through C with center O Segment f Segment f: Segment [B, O] Segment g Segment g: Segment [O, C] Segment h Segment h: Segment [B, A] Segment i Segment i: Segment [A, C] Segment j Segment j: Segment [B, C] Point O O = (3.14,2.88) Point O O = (3.14,2.88) Point O O = (3.14,2.88) Point C C = (4.38,1.02) Point C C = (4.38,1.02) Point C C = (4.38,1.02) Point B Point B: Point on c Point B Point B: Point on c Point B Point B: Point on c Point A Point A: Point on c Point A Point A: Point on c Point A Point A: Point on c

Image of a Circle Having Center O and Sum of Two Angles

Representing the image of a circle having center O and sum of two angles

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 2

» Mathematics » Circles

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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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