Answer:
18.85
Step-by-step explanation:
2(3.14)(3)
Answer:
-1 < 0
Step-by-step explanation:
0 is nothing and -1 is less than nothing
Answer:
No
Step-by-step explanation:
Answer:
<u>Mass</u>

<u>Center of mass</u>
<em>Coordinate x</em>

<em>Coordinate y</em>

<em>Coordinate z</em>

Step-by-step explanation:
Let W be the wire. We can consider W=(x(t),y(t),z(t)) as a path given by the parametric functions
x(t) = t
y(t) = 4 cos(t)
z(t) = 4 sin(t)
for 0 ≤ t ≤ 2π
If D(x,y,z) is the density of W at a given point (x,y,z), the mass m would be the curve integral along the path W

The density D(x,y,z) is given by

on the other hand

and we have

The center of mass is the point 
where

We have

so





84
If DA bisects angle CAE, and angle DAE=42
Then Angle CAE=84
If line AC bisects BAE, and we know angle CAE=84
Angles CAE and BAC are equal meaning they both measure 84 degrees