Which net matches the solid figure shown below? A three-dimensional cube with a height of 8 centimeters, a length of 6 centimeters, and a width of 3 centimeters.

first image is the cube, second image is a, last image is d.

please don't guess, thank you!

This size running track is usually called a 400 meter track. however if a person ran as close to the inside as possible on the track they would run less than 400 meters in one lap. how far away from the inside border would someone have to run to make one lap equal exactly 400 meters