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True. The radius is half the diameter.
true
It is a straight line.
yes that is true
Nearly, I think you committed a typo: pi = circumference/diameter
true
true
The OBSERVABLE Universe has a diameter of about 93 billion light-years. "Observable" means that the light of anything beyond that hasn't had time to reach us, since the time of the Big Bang.
The observable Universe has a diameter estimated at 93 billion light-years.
A theory is empirically adequate if its empirical (observable) consequences are true.
The observable universe is thought to be a sphere about 93 billion light years in diameter (see related link).
True. The radius is half the diameter.
false is hair shaft
false is hair shaft
true an air mass is sometimes thousands of of kilometers in diameter
true
FALSE