Q2 of 64 Page 74

The arc length of a sector of a circle of radius 14 cm is 22 cm. Find its central angle.

Given:

radius (r) = 14 cm


Arc length = 22 cm


central angle = θ


As we know,


Length of arc =





⇒ central angle = 90°


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1

Find the arc length, area and perimeter of the sector with

radius 21 dm and sector angle 240°

 2

Find the angle subtended by an arc 88 cm long at the centre of a circle of radius 42 cm.

 2

Find the radius of a sector of a circle having a central angle 70°and an arc length of 44 cm.

 3

Find the area and perimeter of the sector with

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