X^2 + y^2 - 2x + 8y - 47 = 0
x^2 + y^2 - 2x + 8y = 47
(x^2 - 2x) + (y^2 + 8y) = 47
(x^2 - 2(1)x) + (y^2 + 2(4)y) = 47
(x^2 - 2(1)x + 1^2) + (y^2 + 2(4)y + 4^2) = 47 + 1^2 + 4^2
(x - 1)^2 + (y + 4)^2 = 64 = 8^2
r=8
You should suck a long rod and the answer is around 50 minutes
x = 16 x sin(60) = 8sqrt(3)
answer is B.
O wholes
8 columns/ rows
3 small squares
1. 14.4 km, 2. 25.2 km, 3. 37.8 km
