SSC CHSL 7 Jan 2017 Shift 3 Paper

Question : 63 of 100

Marks: +1, -0

Find measure of central angle of the arc whose length is 22 cm and radius of the circle is 28 cm?

Solution:

Radius = 28 cm and let central angle = θ
Length of arc =

θ/360×2πr=22

⇒

θ/360×2 ×22/7×28=22

θ/360×2×4=1

⇒

θ =360/8=45°

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