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A triangle with perimeter 24 cm has an inscribed circle of radius 3 cm. What is the area of the triangle?

Class 10Tangent Lengths and IncirclesGeometry
  • A
  • B
  • C
  • D

Step-by-Step Solution

Join the centre to the three vertices: three triangles, each with height . Area = cm. 72 forgets the .
Answer: B)

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