#### 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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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.