The perimeter of the triangular field is 450 m and its sides are in the ratio 13:12:5. Find the area of the triangle.

Question

TextHeron's Formula for Area of TriangleSemi-perimeter of TriangleCBSE PYQ

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The area of an equilateral triangle with perimeter 12 cm is

Find the percentage increase in the area of a triangle if its each side is doubled.

Semi-perimeter of Triangle