4πrsquare= 2πrsquare+2πrh
2πrsquare=2πrh
R=h
So h=16/2=8mm
So hmmm check the picture below
so, we're looking for dr/dt then at 4:00pm or 4 hours later
now, keep in mind that, the distance "x", is not changing, is constant whilst "y" and "r" are moving, that simply means when taking the derivative, that goes to 0
2 units left would make it be 0,3 and a rotation of 90 degrees counterclockwise about the origin would make it -3,0
Answer:
1.6 Miles every hour
Step-by-step explanation:
6.4m÷4h=1.6m every h