X (y-z)+y (z-x) +z ( x-y)

0

Step-by-step explanation:

x (y-z)+y (z-x) +z ( x-y)

Simplify the bracket

xy -xz + yz - yx + zx - zy

combine the like terms

xy - yx -xz + zx + yz - zy

= 0

The perimeter of crater lake is 17.27 miles.

Step-by-step explanation:

Given as :

The shape of the lake is like a circle

The diameter of lake = d = 5.5 miles

∵ shape pf lake is circle, so the diameter of circle = d = 5.5 miles

Let The perimeter of crater lake = p miles

Now, As we know

The perimeter of circle = × diameter

the value of   = 3.14

Or, p =   × d

Or, p =   × 5.5 miles

Or, p =  3.14 × 5.5 miles

∴ p = 17.27 miles

So, The perimeter of circle = perimeter of lake = p = 17.27 miles

Hence, The perimeter of crater lake is 17.27 miles. Answer