tolong bantuin pakai cara jangan asal jawab

luas 1/2 O
= 1/2 × π r kuadrat
= 1/2 × 3,14 × 9 × 9
= 1/2 × 254,34
= 127,17 cm2

luas trapesium
= jumlah sisi sejajar × t / 2
= { 13 + 27 } × 18 / 2
= 40 × 18 / 2
= 720/2
= 360 cm2

luas gabungan
= 127,17 cm2 + 360 cm2
= 487,17 cm2