Answer for part a: 10 centimeters
answer for part b: 13.9 inches
Answer:
The rate of the volume increase will be 
Step-by-step explanation:
Let's take the derivative with respect to time on each side of the volume equation.

Now, we just need to put all the values on the rate equation.
We know that:
dR/dt is 0.04 cm/s
And we need to know what is dV/dt when R = 10 cm.
Therefore using the equation of the volume rate:


I hope it helps you!
Answer:36
Step-by-step explanation:
multiply by 2.
8x10
perimeter 2l+2w
16+20
36
Hi I'm new to this website so I wanted to comment that I'm having the same complication with that exact same problem
On 5, the answer would be Area equals base plus base squared divided by two times by height I believe.