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What is the value of x to the nearest tenth?

The value of x is 27 units from the given circle, if the radius of the circle is 18 units.
Step-by-step explanation:
The given is,
Circle diagram, with radius of 18
Step:1
Given circle contain right angular triangle,
Ref attachment,
x = 18
y = 12
Where,
x = a + b...................(1)
a = b
a = [tex]\frac{x}{2}[/tex]
b = [tex]\frac{x}{2}[/tex]
From Pythagoras theorem,
[tex]x^{2} =a^{2} +y^{2}[/tex]
Substitute the values,
[tex]18^{2}=12^{2} + a^{2}[/tex]
[tex]324=144+a^{2}[/tex]
[tex]a^{2} = 180[/tex]
Take square root on both sides,
[tex]a=\sqrt{180}[/tex]
a= 13.416
Step:2
From equation (1),
x = 13.416 +13.416
x = 26.833
x ≅ 27
Result:
The value of x is 27 units from the given circle, if the radius of the circle is 18 units.