One half the diameter = the radius
Algebraically expressed as
d/2 = r
or
d = 2r
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That it is half the diameter of a circle
17 Half the diameter
the radius of a circle is half the diameter, so half of 1.8 is .9. The radius is .9km.
The radius is half the diameter 15mm because the raduis is half the diameter so 30mm divided by 2mm it would be 15mm
Such a circle is impossible. The radius of a circle is half its diameter.