Question

hello experts this is the question based on mensuration area of a Trapezium and a polygon please give me the correct answer with explanation and step by step method please help me as I am not able to solve it by my own self
answer only if you know​

Answer 1

Answer:

use herons formula

area of triangle=s(s-a)(s-b)(s-c)

s=perimeter/2

s=(20+16+12)/2

s=48

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