Answer: A. 37 feet
Step-by-step explanation:
1. You can find the x value of the vertex of the parabola as following:

2. Substitute values:
a=-16
b=45

3. Substitute the vaue obtained into the equation given in the problem. Therefore, you obtain the following result:

4. To the nearest foot:

Answer:
Step-by-step explanation:
The circumference of a circle's formula is pi*d (d being diameter).
If it only shows you the radius, then the formula would be 2*pi*r (r being radius), this is the same as pi*d.
2*r = d
Question 2
The circle has a diameter of 100m. Find circumference
pi*d
pi*100
314.16m in total
Perimeter (P)
P= a+b+c
P=6.5+6.5+9
P=13+9
P=22ft
Area
A=h•b/2
A=4.7 •9/2
A=42.3/2
A=21.15 ft^2