Objects in image: Whiteboard, Ruler
Text visible in image: 2, 810=2x=65,(p)=03, =2, x=l0g,, 10.301, 301, 477, 301+.477, .778.10', 33, oy=lg,(3), =0.477, =10, =10, y=(, fx), Hokem, 0.477, 0.301, 0.778, 1.00
Question: what is the length shown on the middle line?
Answers: 8.4, 0.778, 0.778, <9, 8.4, 5.5, 0.778, indice pour la porte, unanswerable, unanswerable