The inradius of triangle is 4 cm and its area is 34 sq. cm. the perimeter of the traingle is
Area of triangle = in-radius $$\times$$ semi-perimeter
In radius = 4 cm
Let perimeter of triangle = $$x$$ cm
=> Semi-perimeter = $$\frac{x}{2}$$ cm
=> Area = $$4 \times \frac{x}{2}=34$$
=> $$2x=34$$
=> $$x=\frac{34}{2}=17$$ cm
=> Ans - (B)
Create a FREE account and get: