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Find measure of central angle of the arc whose length is 22 cm and radius of the circle is 28 cm?
Radius = 28 cm and let central angle = $$\theta$$
Length of arc = $$\frac{\theta}{360} \times 2 \pi r = 22$$
=> $$\frac{\theta}{360} \times 2 \times \frac{22}{7} \times 28 = 22$$
= $$\frac{\theta}{360} \times 2 \times 4 = 1$$
=> $$\theta = \frac{360}{8} = 45$$°
=> Ans - (B)
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