458.87 to the nearest tenths is b) 458.9
Answer:
0.857..miles/sec
Step-by-step explanation:
this is basically your distance divided by the time:
miles/hr in this case
Speed= 0.75/0.875 = 0.857... miles/sec
Hope this helps!
Please mark brainliest if you think I helped! Would really appreciate!
The correct question is:
Find the area of the surface generated by revolving about the x-axis, the portion of the astroid

Answer: The Surface Area is

Step-by-step explanation:
First, we rewrite the expression in terms of x, because we are revolving about the x-axis, we want to integrate in terms of x. Doing that, we have

Next, we differentiate y with respect to x

Thus,

and so

Therefore, the Surface Area is given as:

If we let

then

so we see that
