Question

I NEED HELP PLEASE, THANKS!!

Answer 1

Answer:

18π$\sqrt{2}$ 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 = $\sqrt{648}$ = 18 = $\sqrt{324(2)}$ = 18$\sqrt{2}$ , thus

C = πd = 18π$\sqrt{2}$

Answer 2

Answer:

18 pi sqrt(2)

Step-by-step explanation:

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)