Tolong bantu jawab ya

Lpersegi panjang
=p×l
=40cm × 20cm
=800cm²
L¼lingkaran
=¼×π×r²
= ¼ × 3,14 × 20×20
=3,14 × 5 ×20
=3,14 × 100
=314cm²

Lbangun
=800+314
=1114cm²

Lp=40×20
=800
Lo=1/4×3,14×20×20
=314
Lgabungan=800+314
=1114 cm2