Dikdörtgen Alanı ve Bölge Hesaplama

Ahmet Bey'in tarlasına zararlı böcekler girip görseldeki turuncu ve mavi boyalı bölgelerdeki ekinleri kurutmuştur. Buna göre tarlada zararlı böceklerin kurutmadığı bölgenin alanı kaç metrekaredir?

Soruda görsel içerik var: A large rectangle labeled 'Tarla' (Field) representing a grid-based area. The large rectangle has a horizontal length of $125\, \text{m}$ and a vertical width of $42\, \text{m}$. Inside this rectangle, there are two distinct smaller square regions. One is a blue square located at the bottom-left corner with side lengths of $20\, \text{m}$ by $20\, \text{m}$. The other is an orange/beige square located at the top-right corner with side lengths of $10\, \text{m}$ by $10\, \text{m}$. Dimension lines indicate these measurements clearly outside the main shape.