plese help tolong dibantu cariin lp

l.p prisma = (2×l.alas)+(kll alas × T.prisma)

l.alas = ½×10×12 = 60cm²
sisi miring = √12²+5² = √144+25 =√169 =13
kll alas = 13+13+10 = 36cm

l.p prisma = (2×60)+(36×20)
120 + 720 = 840cm²

semoga membantu