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A circle is inscribed in a triangle. What is the radius of the incircle if the t

Practice Questions

Q1
A circle is inscribed in a triangle. What is the radius of the incircle if the triangle has sides of lengths 7, 8, and 9 units?
  1. 4 square units
  2. 3 square units
  3. 5 square units
  4. 2 square units

Questions & Step-by-Step Solutions

A circle is inscribed in a triangle. What is the radius of the incircle if the triangle has sides of lengths 7, 8, and 9 units?
  • Heron's Formula – A method to calculate the area of a triangle when the lengths of all three sides are known.
  • Incircle Radius – The radius of the circle inscribed within a triangle, calculated using the area and semi-perimeter.
  • Semi-perimeter – Half of the perimeter of the triangle, used in the calculation of the area and incircle radius.
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