True. The radius is half the diameter.
True
True !! it is also a straight line from one side of the circle, through the middle point to the other side of the circle. Any other straight line inside a circle, that does NOT touch the centre is a chord.
The question does not make sense as you have made an error with the measurements. The diameter is equal to exactly twice the radius. This must always be true in any circle. Your measurements do not agree and thus they are wrong and this question can't be answered with confidence.
Yes, it is true. Any circles with the same radius will have the same circumference as well.
A circle is the locus of points that are equidistant from a fixed point. As a result, all radii of the circle must be of the same length. A diameter is a straight line that goes from the circumference to the centre and on to the circumference on the other side. Thus it is a radius from the circumference to the centre and then another radius from the centre to the circumference. And since these are the same, it is 2 radii in length.
True. The radius is half the diameter.
A true and useful definition of "radius" is that it's 1/2 of the diameter.
True
It varies on how large the diameter and radius is. True, but with the radius you know to double it and you have the diameter. If you muliply Pi (3.14....) times the diameter, you get the circumference. So radius = circumference divided by Pi, with that answer (which is "diameter")then divided by two.
That it is half the diameter of a circle
It is not true
True !! it is also a straight line from one side of the circle, through the middle point to the other side of the circle. Any other straight line inside a circle, that does NOT touch the centre is a chord.
The question does not make sense as you have made an error with the measurements. The diameter is equal to exactly twice the radius. This must always be true in any circle. Your measurements do not agree and thus they are wrong and this question can't be answered with confidence.
The length of a sphere is its diameter
true
False:: The distance from the circle centre to the circulference is the RADIUS. However, As a straight line, the distance from the circumference , through the circle centre to to circumference on the opposite side is the Diameter. The diameter is twice the radii. Algebraically, d = 2r.