C, since the radius is 10 multiply by 2 and 100 x 3.14 is 314
Answer:
Part 1) The perimeter is ![P=172\pi\ ft](https://tex.z-dn.net/?f=P%3D172%5Cpi%5C%20ft)
Part 2) The area is ![A=1,204\pi\ ft^2](https://tex.z-dn.net/?f=A%3D1%2C204%5Cpi%5C%20ft%5E2)
Step-by-step explanation:
Part 1) Find the perimeter
we know that
The perimeter is equal to the circumference of the exterior circle plus the circumference of the interior circle
so
![P=2\pi (50)+2\pi (36)](https://tex.z-dn.net/?f=P%3D2%5Cpi%20%2850%29%2B2%5Cpi%20%2836%29)
![P=2\pi (86)\\P=172\pi\ ft](https://tex.z-dn.net/?f=P%3D2%5Cpi%20%2886%29%5C%5CP%3D172%5Cpi%5C%20ft)
Part 2) Find the area
we know that
The area of the figure is equal to the area of the larger circle minus the area of the smaller circle
so
![A=\pi (50)^2-\pi (36)^2](https://tex.z-dn.net/?f=A%3D%5Cpi%20%2850%29%5E2-%5Cpi%20%2836%29%5E2)
![A=\pi (1,204)](https://tex.z-dn.net/?f=A%3D%5Cpi%20%281%2C204%29)
![A=1,204\pi\ ft^2](https://tex.z-dn.net/?f=A%3D1%2C204%5Cpi%5C%20ft%5E2)
Answer:
y=-5x+12
Step-by-step explanation:
just use a graphing calculator and basic knowledge of slope intercept form
Proportional mate try that maybe then
Divide by -2: 3x-5 < -17
Add 5: 3x < -12
Divide by 3: x < -4 (answer)