(Q10) Construct, a tangent to a circle of radius 4cm from a point on the concentric circle of radius 6cm and measure its length. Also verify the measurement by actual calculation.

Steps of construction

  1. Draw two concentric circles with center 'O' and radii 4cm and cm
  2. Take a point 'P' on larger circle and join O,P.
  3. Draw the perpendicular bisector of OP which intersects it at .
  4. Taking M as center and PM or MO as radius draw a circle which intersects smaller circle at Q
  5. Join which is a tangent to the smaller circle.