Question

help please number 41

http://prntscr.com/bhe1is

Answer 1

@zepdrix

Answer 2

@Zarkon

Answer 3

What have you tried so far ?

Answer 4

the graphing part

Answer 5

Very good start

Answer 6

oh okay , so idk which method to use

Answer 7

See if you can make use of below hint :

You don't need to know calculus to solve this problem

Answer 8

What solid object do you get when you spin a circle about its diameter ?

Answer 9

Notice that y axis is a diameter of the given circle

Answer 10

hmm okay so im thinking that it would be the radius ?

Answer 11

You need to do some visualization in your head to see clearly what solid region a spinning circle sweeps

Answer 12

Its easy. Make a good guess, you will be right

Answer 13

hmm okay so its spining in the y axis ?

Answer 14

Haven't you read the question ?

Answer 15

It was specified at the top of the page in your attachment

Answer 16

ohh i get it now

Answer 17

Good. May I know what you've got ?