Plisss bantuin donk pr buat bsk,lumayan nih dpat 10 poin....

luas persegi panjang = p x l = 30 cm x 40 cm = 1200 cm²

segitiga : 
  a = 40 cm - 4cm + 15 cm = 40 -19 = 21 cm
  t = 46 cm - 40 cm = 6 cm
  L = 1/2 x at = 1/2 x 21 x 6 = 126 x 1/2 = 63 cm

L seluruhna = 1200 cm² + 63 cm² = 1263 cm²
        semoga bantu yaaa

Lsegitiga = a × t
= 21 × 16
= 336 cm
Lpersegi panjang = p × l
= 30 × 40
=1200 cm
Lsegitiga + Lpersegi panjang
= 336 + 1200
=> 1.536 cm
#maaf kalau salah