पर्दा एरिया ऑफ ट्रायंगल हीरोइंस फार्मूला a=16 cm b=18cm c=20cm
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Step-by-step explanation:
s=(a+b+c)/2
=(16+18+20)cm/2
=54cm/2
=27cm
area of a triangle
=√s(s-a)(s-b)(s-c)
=√27(27-16)(27-18)(27-20)
=√27×11×9×7
=√3×9×11×9×7
=9√231
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