An arc of length 10.8 cm subtends an angle of 1.2 radians...
An arc of length 10.8 cm subtends an angle of 1.2 radians at the centre of a circle. Calculate the radius of the circle.
12.6 cm
12.0 cm
9.6 cm
9.0 cm
Correct answer is D
Length of arc (in radians) = rθ
10.8=1.2r
r=10.81.2=9.0cm
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