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.
Answer Details
In a circle, the length of an arc is given by:
l = rθ
where r is the radius of the circle, and θ is the angle subtended by the arc at the centre of the circle in radians.
In this question, we are given the length of the arc (l = 10.8 cm) and the angle subtended by the arc (θ = 1.2 radians). We can rearrange the formula above to solve for the radius r: