You put a value in for r, and keep trying until they equal out, let me know if this helps, or if you need more
Answer:
<u>The cover has diameter of:</u>
- 20 feet + 2*12 inches = 20 feet + 2 feet = 22 feet
a.
<u>Area of the pool cover:</u>
- A = πd²/4 = 3.14*22²/4 = 379.94 ft²
b.
<u>The length of the rope:</u>
- C = πd = 3.14*22 = 69.08 ft
The equation for a parabola with vertex (h, k) and vertical scale factor "a" is
y = a(x -h)² + k
One parabola with vertex (6, 9) is
y = (x-6)² +9