NO 38 SAJA yang di jawab ya, tolong

Nomor 38 :
a = 4
b = 6
∠C = 30°

Luas segitiga PQR
= 1/2 x a x b x sin C
= 1/2 x 4 x 6 x sin 30°
= 1/2 x 4 x 6 x 1/2
= 1/4 x 24
= 24/4
= 6