What is the formula for finding the circumference of a circle?

C=2πr

C=πd

Step-by-step explanation:

C=2πr for radius

C=πd for diameter

The vertex that maximize the problem is (2,000,4,000)

Step-by-step explanation:

we have

The vertex of the shaded region are

A(0,0), B(4,000,0),C(2,000,4,000), D(0,6,000)

Substitute the value of x and the value of y of each vertex in the z equation to find the solution

case A) A(0,0)

case B)  B(4,000,0)

case C)  C(2,000,4,000)

case D)  D(0,6,000)

therefore

The vertex that maximize the problem is (2,000,4,000)