
For

the derivative is negative.
For

the derivative is positive.
Therefore at

there's a minimum.
Answer:
4.R=16
D=16+16=32
C=

C=32π
then do the same thing for other problem
Answer:
9 units
Step-by-step explanation:
To find the length of a side of a square, you need to square root the area
√81 = 9
Answer: 53.44
Step-by-step explanation:
The answer
let p' be the corresponding angle of the angle p (that is because of the prallelism and the transversal, look the image)
but p' and p are correspondant angles implies p'=p,
looking at the figure, p' and q are opposite angles
so q=p' and p'=p implies q=p
the answer is
<span>p = q</span>