1783633217vitecpotec6

The jukebox in Minecraft is 1m³ (just like most blocks) and is 16 pixels wide. The disk hole is 16 − 3×2, so 10 pixels. Since 16 pixels is 1m, 1 pixel is roughly 6.25 cm. 6.25 by 10 is 62.5 cm, which is around 24.61 inches. The music disk texture is 15px wide and 10px high. If the width is 15px (which is 62.5 cm), then 10px is (62.5/15)×10 = 41.6 cm, which is 16.38 inches. So, the Minecraft disk is roughly 24.5 × 16.3 inches, or 60 × 40 cm