Calculate the length of tangent from a point 15cm away from the centre of a circle of radius 9cm

Subject
Topic
Level
Highschool
Grade
10

Answer

12 cm

 

 

 

Steps

 

  1. Sqrt((15^2)-(9^2))
  2. Sqrt((15+9)×(15-9))
  3. Sqrt(24×6)
  4. Sqrt(144)
  5. 12 cm.

 

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