Question

find area of a triangle whose side are 50 cm 120 CM 80 CM

Heron's formula fast please​

Answer 1

Given sides = 50cm , 120cm , 80cm

Semiperimeter(S) = a + b + c / 2 = 50+120+80/2 = 250/2 = 125cm

Area of triangle = √[s(s-a)(s-b)(s-c) ]

= √[ 125(125-50)(125-120)(125-80) ]

= √[ 125(75)(5)(45)] = 375√15cm^2