20 x 42= 840
So the area would be 840 mm^2.
By Green's theorem,
where 
is the circle 
and 
is the interior of , or the disk 
.
Convert to polar coordinates, taking
Then the work done by 
on the particle is
Lets say cookies = x and days = y.
2x times y = 15.
8x times y = 45.
Step-by-step explanation:
every flip has 2 possible outcomes.
1 flip has 2.
2 flips have 2×2 = 2² = 4
3 flips have 2×2×2 = 2³ = 8
and so on.
the number of possible combinations flipping a coin n times is
C(n) = 2^n
for 10 flips
C(10) = 2¹⁰ = 1024
possible outcomes or combinations.
