tolong napah caranyaa gmnaa!! buat besok...

Luas 1 = P × L
= 14 cm × 20 cm
= 280 cm^2
Luas 2 = π × r × r
= 22/7 × 7 cm × 7 cm
= 22/1 × 1 cm × 7 cm
= 154 cm^2
Luas bangun tersebut = L 1 - L 2
= 280 cm^2 - 154 cm^2
= 126 cm^2

maaf kalau salah y...

luas persegipanjang = p × l
= 20 × 14 = 280 cm^2
luas 1/2 lingkaran = 1/2 × 22/7 × 7 × 7
= 77 cm^2
luas 1/4 lingkaran = 1/4 × 22/7 × 7 ×7
= 38,5 cm^2
luad bangun = 280 - 77 - 38,5 = 164,5 cm^2