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The Measure of an Arc of a Circle is 80° Cm and Its Radius is 18 Cm. Find the Length of the Arc. ( π = 3.14 ) - Geometry

ConceptLength of an Arc

Question

The measure of an arc of a circle is 80° cm and its radius is 18 cm. Find the length of the arc. ( $\pi$  = 3.14 )

Solution

Radius of the arc, r = 18 cm
Measure of the arc, θ = 80º
∴ Length of the arc = $\frac{\theta}{360° } \times 2\pi r = \frac{80°}{360°} \times 2 \times 3 . 14 \times 18$ = 25.12 cm

Thus, the length of the arc is 25.12 cm.

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Balbharati Solution for Balbharati Class 10 Mathematics 2 Geometry (2018 to Current)
Chapter 7: Mensuration
Practice set 7.3 | Q: 2 | Page no. 154
Solution The Measure of an Arc of a Circle is 80° Cm and Its Radius is 18 Cm. Find the Length of the Arc. ( π = 3.14 ) Concept: Length of an Arc.
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