Answer:
This is an ellipse.
Step-by-step explanation:

Applying the angle values in intervals of right angles (90°), the resulting set of values for z are:

(again)
If you look at the plot, you will observe how these values represent points in the xy plain. All of them belong to either the x or the y axis.
The resulting figure for the whole set of values of
is in fact an ellipse.
Answer:
Posts: 34
Area: 264 yard²
Step-by-step explanation:
Posts: (7 x 2) + (10 x 2) = 34
Area: 2 x (7 - 1) x 2 x (12 - 1) = 2 x 6 x 2 x 11 = 264 yard²
Percent means parts out of 100
7%=7/100=0.07
'of' means multiply so
7%=0.7
7% of 280=0.07 times 280=196
12%=0.12
12% of 300=36
2%=0.02
2% of $1250=$25