SSC CHSL 8 Jan 2017 Shift 3 Paper

Question : 56 of 100

Marks: +1, -0

What is the length of the arc whose central angle is 30° and radius of the circle is 21 cm?

Solution:

Central angle = θ = 30° and radius =r = 21 cm
Length of arc =

θ/360×2πr

=30/360×2×22/7×21

=1/12×44×3=11

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