Question

In the given figure, triangle ABC is an equilateral triangle. A circle is drawn inside the triangle ABC which touches the sides AB, BC and CA at point P, L and R respectively.OL is perpendicular to BC, O is the centre of the circle. OC is the bisector of angle ACB. If the area of an incircle is 154 cm square,then find: 1.the radius of incircle, 2.the length of the side BC, 3.perimeter of triangle ABC, 4. area of an equilateral triangle ABC. [take pie=22/7]

Answer 1

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