keliling segitiga berukuran 15cm × 9cm cara dan jawabannya gmna?

Keliling = ½ × Alas × Tinggi
= ½ × 15 × 9
= 67,5 cm

c2 =>> a^2 - b^2
=>> 15^2 - 9^2
=>> 225 - 81
=>> 144
c =>> √ 144 =>> 12 cm

K =>> a + b + c
=>> 15 + 9 + 12
=>> 36 cm