Using Hero's formula. Find the area of an equliter triangle whose perimeter is 60 cm
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s =a+b+c /2
s = 60+60+60/2
s = 180/2
s = 90
by heros formula it is mentioned above in photo
s = 60+60+60/2
s = 180/2
s = 90
by heros formula it is mentioned above in photo
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