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
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.
True. The radius is half the diameter.
The observable universe is thought to be a sphere about 93 billion light years in diameter (see related link).
false is hair shaft
false is hair shaft
true
It is not true
No, quite the opposite.
It is a straight line.
FALSE
Water boils at 100 degrees Celsius at sea level.