Q1 of 31 Page 181

In a circle of radius 7 cm, an arc subtends an angle of 60° at the centre. Find the length of the arc.

Given: Radius of the circle = 7 cm and angle subtended by the arc = 60°


We know that the length of the arc


⇒ Length of the arc


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The area enclosed between two concentric circles is:

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The radii of two concentric circles are 4 cm and 3 cm respectively. The area enclosed by the two circles is:

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A sector of a circle of radius 10.5 cm contains an angle of 45°. Find the area of the minor sector.

3

The length of an arc of a circle of radius 7 cm is 12 cm. Find the area of the minor sector.