<h2>
Answer:</h2>
Step-by-step explanation:
yeah
By Stokes' theorem,

where
is the surface with
as its boundary. The curl is

Parameterize
by

with
and
. Then take the normal vector to
to be

Then the line integral is equal to the surface integral,


Step-by-step explanation:
x+y=180
x=180-y------(i)
x-y=70------(ii)
Now,
Putting the value of x in equation (ii)
x-y=70
(180-y)-y=70
180+2y=70
2y=70-180
2y= - 110
y= - 110/2
y= - 55
Again,
x=180-(-55)
x=235
x-y=70
x-(-55)=70
x+55=70
x=70-55
x=15
<h2>Answer: 4</h2><h2>what is the value of 2+2</h2>