# In a Circle of Radius 21 Cm, an Arc Subtends an Angle of 60° at the Centre. Find the Length of the Arc. - Mathematics

Sum

In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find the length of the arc.

#### Solution

We have r = 21 cm and θ = 60°

Length of arc = theta/360^circxx2pi"r"xx2xx22/7xx21 = 22 "cm"

Hence, the length of the arc of the circle is 22 cm.

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#### APPEARS IN

RS Aggarwal Secondary School Class 10 Maths
Chapter 18 Area of Circle, Sector and Segment
Exercise 18A | Q 14 | Page 820