The three sides make a right triangle and you know the base (90) and the height (70)
A = 1/2 bh or 1/2 x (70)x (90)= 3150 ft²
Green's theorem says the circulation of 
along the rectangle's border 
is equal to the integral of the curl of over the rectangle's interior 
.
Given 
, its curl is the determinant
So we have
Answer:
0
Step-by-step explanation:
The answer is 0. It shows up the most on the list. Also I know the awful Khan Academy brought you here.
(12 x 2) - 5 because twice as many means to multiply by 2. fewer means to subtract.
