Hitunglah luas segitiga ABC jika diketahui a = 16 cm, b = 14 cm, dan c = 10 cm

K = a + b + c
K = 16 cm + 14 cm + 10 cm
K = 40 cm

s = ½ K
s = ½ (40 cm)
s = 20 cm

L = √[s(s - a)(s - b)(s - c)]
L = √[20(20 - 16)(20 - 14)(20 - 10)]
L = √[20(4)(6)(10)]
L = √4800
L = √48√100
L = 10√48 cm²
L = 69,28 cm²