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- The perimeter of a triangle is 28 cm and the inradius of the triangle is 2.
Question 1:
The perimeter of a triangle is 28 cm and the inradius of the triangle is 2.5 cm. What is the area of the triangle? A. 25 cm²
B. 42 cm²
C. 49 cm²
D. none of these
Feedback Area of a triangle = r * s
Where r is the inradius and s is the semi perimeter of the triangle.
Area of triangle = 2.5 * 28/2 = 35 cm²
Where r is the inradius and s is the semi perimeter of the triangle.
Area of triangle = 2.5 * 28/2 = 35 cm²
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