what is heron's formula
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For a quadrilateral, when one of its diagonal value and the sides are given, the area can be calculated by splitting the given quadrilateral into two triangles and use the Heron's formula. Example :A park, in the shape of a quadrilateral ABCD, has ∠C=90∘, AB = 9 cm, BC = 12 cm, CD = 5 cm and AD = 8 cm.
Answer:
heroines formula is
√ s ( s- a) (s-b) ( s- c)
where , a + b + c + ÷ 2