In a circle of radius 35cm, an arc subtends an angle of 72° at the centre. Find the length of the arc and area of the sector.
Given,
Radius of circle = 35cm
Angle subtend by arc = 72°
Length of arc = r×q
Since,
180° = π radius
1° = 
Length of the arc = 
Area of sector = 
= 770 cm2
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