Math, asked by faizansari5061, 7 months ago

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Answered by chhavi9899629683

0

Answer:

perimeter =90+70+40=200

s=90+70+40/2=100

a=√s(s-a)(s-b)(s-c)

a=√100(100-90)(100-70)(100-40)

after solving we get

a=100√2

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