Construct a circle of radius 7cm. From a point 10 cm away from its centre, draw tangents to the circle.
Draw a circle of radius 6 cm. From a point 10 cm away from its centre, construct a pair of tangents to the circle and find their lengths.
Draw a circle of radius 3cm. From a pointP,7cm away from it centre draw two tangents to the circle. Measure the length of each tangent.