Hi!!!, i used to be home schooled. IT WAS THE WORST. I've had to go through what your going through right now for 2 years. I'm in the 8'th grade. and i've been wanting to meet new friends.
Answer:
2/π ≈ 0.637 m/s
Step-by-step explanation:
The rate of change of area with respect to time is ...
A = πr²
dA/dt = 2πr·dr/dt
Filling in given values in the above equations, we can find r and dr/dt.
25π = πr² ⇒ r = 5
20 = 2π·5·dr/dt
dr/dt = 20/(10π) = 2/π . . . . meters per second
The radius is increasing at the rate of 2/π ≈ 0.637 meters per second.
Answer:
$67.38 is the correct answer
It should be 77 because 180-55-48=77 and I took the test
