Answer:
10
Step-by-step explanation:
The radius is the magnitude of the complex number that is the difference between any point on the circle and the center point. A suitable calculator can tell you that magnitude:
║(8+7i) - (2-i)║ = √((8-2)² +(7-(-1))²) = √(36+64) = √100 = 10
Below is the answer:
Any rectangle with a side against y-axis can be rotated about y-axis to create a cylinder.
<span>The other 3 coordinates will be (a, 3), (a, b), (0, b) </span>
<span>This will be a cylinder of radius a and height |3−b|</span>
They’re the coefficients of the unknown numbers