Heron's Formula
Assignment Sheet
CLASS 9 - Maths
⒉ Find the cost of lying grass in a triangular field of sides 50m ,65 m, and 65 m at the rate of ₹ 7 per m²
⒊ From a point in the interior of an equilateral triangle, perpendiculars are drawn on the three sides. The lengths of the perpendiculars are 14 cm, 10cm and 6 cm. Find the area of the triangle.
⒋ The perimeter of an isosceles triangle is 32 cm. The ratio of the equal side to its base is 3:2. Find the area of the triangle.