Tlong bantu cari leliling dan luasnya dong... Pakai cara ya,,agak ga faham nih

keliling = 50+ ( 42 ×2) + (15×2) + 10
= 50 + 84 + 30 + 10
= 174 cm
Luas = 2 × luas segitiga + luas persegi panjang
= 2 ( 1/2 × 20 × 30 ) + ( 10 × 15)
= 2 × 300 + 150
= 600 + 150
= 750 cm^2
luas = 750 cm^2