Answer:
V = 1134.9
Step-by-step explanation:
Since 
Firstly we need to divide 17 by 2 to get the radius which is 8.5
Then we need to solve by putting the values in...
x
x 
= 1134.9
Answer:
400
Step-by-step explanation:
He makes $4 per shirt ($12-$8). $1600/4 = 400. So he woud need to see at least 400 shirts to break even.
Use distance formula (Pythagorean theorem) to find the complex number's distance from zero. There is an imaginary axis and a real axis, and these behave very much like the regular x and y axes. √(2² + 4²) = √20
The absolute value of 2 + 4i is √20