Answer:
feet, or 14.14 feet
Step-by-step explanation:
Use the arc length formula:
s = rθ
To use the formula, we have to convert the central angle to radians.
90° is equivalent to
radians, so plug this and the radius into the formula:
s = rθ
s = (9)(
)
s = 
So, the length of the arc is
feet, or approximately 14.14 feet
Answer:
y=10x
Step-by-step explanation:
Find the slope of the original line and use the point-slope formula
y−y1=m(x−x1) to find the line parallel to y=10x−45
.
The answer is
A≈3217u²
For the area of circles, multiply

×radius²