At their closest recorded distance apart, which was 34.8 million miles, it would take 182 seconds (just over three minutes). At their maximum possible distance apart, which is 250 million miles, it would take approximately 22 minutes for the signal to reach Mars.
video on the cost of concrete floors depending on the level of complexity concrete floors can cost as little as $ 2 to $ 6 a square foot or be as expensive as $ 15 to $ 30 a square foot
The average minimum cost per square foot of concrete slab is $1.36. The average maximum cost per square foot of concrete slab is $1.88. In addition to the concrete used to form the slab, homeowners will face some additional costs associated with this type of residential project.