Q11 of 68 Page 15

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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