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13. Areas Related to Circles
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Q3 of 37 Page 13

A pendulum swings through an angle 60° and describes an arc 8.8 cm in length. Find the length of the pendulum


Given: Length of the arc = 8.8 cm


Central Angle of the sector, θ = 60°


To find: Radius of a circle


Now,







⇒ r = 8.4cm


More from this chapter

All 37 →
1

The circumference of a circle exceeds its diameter by 16.8 cm. Find the circumference of the circle.

2

A sector is cut from a circle of radius 42cm. The central angle of the sector is 150°. Find the length of the arc.

4

A wire made of silver is looped in the form of circular ear ring of radius 5.6 cm. It is rebent into a square form. Determine the length of the side of the square.

5

An arc of a circle of radius 42cm has a length 35.2 cm. Find the angle subtended by the arc at the centre of the circle.

Questions · 37
13. Areas Related to Circles
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
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