Answer:
142°
Step-by-step explanation:

The answer is 12cm because area (420) divided bye height (35) gives you the corresponding side 12cm.
12, 2, 5, 4, 7
The coefficients are the numbers that are in front of the letters
Answer:
Formula: (x^2 -h) +(y^2 -k)=r^2
The number on the right side of the = is the radius of the circle squared.
(h,k) is the center of the circle.