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Radius of a Circle and Lengths of Arcs

1.If an arc 70mm long subtends an angle of pi over 4 radians at the centre what is the radius of the circle?

2.A chord of length 26mm is drawn in a circle of 35mm diameter. What are the lengths of the smaller and larger arcs into which the circumference is divided?

Solution Summary

The solution finds the radius of a circle and lengths of arcs