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Sagot :
First of all we need to realize that half of a yard is as much as 18 inches. If a diameter of the circle is 18 inches, then its radius is 18 ÷ 2 = 9 inches.
The measures of the diameter and the radius, are illustrations of unit conversions
The radius of the circle is 9 inches
The diameter (d) is given as:
[tex]\mathbf{d = \frac{1}{2}\ yard}[/tex]
Multiply by 36 to convert the unit from yard to inches
[tex]\mathbf{d = 36 \times \frac{1}{2}\ inches}[/tex]
[tex]\mathbf{d = 18\ inches}[/tex]
Divide both sides by 2, to get the radius
[tex]\mathbf{r = \frac{d}{2} = \frac{18}{2}\ inches}[/tex]
[tex]\mathbf{r = 9\ inches}[/tex]
Hence, the radius of the circle is 9 inches
Read more about unit conversions at:
https://brainly.com/question/19420601
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