maddietownsley
maddietownsley
16-05-2017
Mathematics
contestada
What is the radius of f?
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SamuelS
SamuelS
16-05-2017
this is a simple right triangle problem.
a^2 + b^2 = c^2
the hypotenuse (or c) is 9 +x
and a is x
And b is 15
So so we sub in the values
x^2 + (15)^2 = (9+x)^2
x^2 + 225 = x^2 + 18x + 81
144 = 18x
8 = x
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