If all the planets were in a row then if would only take 4 minutes because in this position, however this postion is just as common as when the Earth and Mars are on opposite sides of the Sun. In this position it takes 24 minutes for information to travel because Earth and Mars are 24 light minutes. So on average the Earth and Mars are 14 light minutes away so on average a message from Mars would take from 4 to 24 minutes to reach Earth.
Below are some concrete prices to help you determine your new concrete foundation cost. 1  Concrete is typically measured by cubic yards (3âx3âx3â). 2  An average cost for a cubic yard of concrete is $75 to $125, depending on how much is needed and local prices. An average cost for a cubic yard of concrete is $75 to $125, depending on how much is needed and local prices. 2  Labor costs to pour and form concrete run somewhere around $3.50 to $7.00 per square foot.
Needless to say, installing and/or making concrete is a job better left to the pros, but if you are up for a DIY challenge, you will certainly save some dough. According to our concrete slab material estimator, the average minimum cost per square foot of a concrete slab is $1.36 and the maximum is $1.88.By comparison, the price per square foot for a cement slab is $5.50.eedless to say, installing and/or making concrete is a job better left to the pros, but if you are up for a DIY challenge, you will certainly save some dough. According to our concrete slab material estimator, the average minimum cost per square foot of a concrete slab is $1.36 and the maximum is $1.88.