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.
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Correct Answer: Option D
Explanation:
Length of arc (in radians) = \(r \theta\)
\(10.8 = 1.2r\)
\(r = \frac{10.8}{1.2} = 9.0 cm\)
Length of arc (in radians) = \(r \theta\)
\(10.8 = 1.2r\)
\(r = \frac{10.8}{1.2} = 9.0 cm\)