Approximate conversions: 5×8 ≈ 150×240 cm, 6×9 ≈ 180×270 cm, 8×10 ≈ 240×300 cm, 9×12 ≈ 270×365 cm. Rounds follow diameter equivalents (e.g., 8′ ≈ 240 cm).
Approximate conversions: 5×8 ≈ 150×240 cm, 6×9 ≈ 180×270 cm, 8×10 ≈ 240×300 cm, 9×12 ≈ 270×365 cm. Rounds follow diameter equivalents (e.g., 8′ ≈ 240 cm).