Answer:
18π in
Step-by-step explanation:
The circumference (C) of a circle is calculated as
C = πd ( d is the diameter )
d can be calculated as the diagonal d using Pythagoras' identity
d² = 18² + 18² = 324 + 324 = 648 ( take square root of both sides )
d = = 18 = = 18 , thus
C = πd = 18π
18 pi sqrt(2)
We know the sides of a Pythagorean triangle
a^2 + a^2 = c^2
18^2 + 18^2 =c^2
2 * 18^2 = c^2
Taking the square root of each side
c = 18 sqrt(2)
This is the diameter of the circle
We want to find the circumference
C = pi * d where d is the diameter
C =pi* 18 sqrt(2)
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