Keliling segitiga ABC adalah .... Cm

AD = √10² - 8²
AD = √100 - 64
AD = √36
AD = 6 cm

AB = 6 cm + 9 cm
AB = 15 cm

BC = √8² + 15²
BC = √64 + 225
BC = √289
BC = 17 cm

K = AB + BC + AC
K = 15 cm + 17 cm + 8 cm
K = 40 cm (B) ✔