Question

Volume: Drilling a hole in a sphere question. Screenshot in comments

Answer 1

don;t even need that

Answer 2

just set up a proportion

Answer 3

a proportion of r/R?

Answer 4

I don't see anything else to set up a proportion to? @FibonacciChick666

Answer 5

well, what is the initial volume given the radius? how about after?

Answer 6

I have no idea. Only thing I see about volume is "half"

Answer 7

@FibonacciChick666 Is there something I'm missing?

Answer 8

what class is this for?

Answer 9

Calculus I

Answer 10

ewww I see you using some solids of revolution

Answer 11

I was trying to avoid washer method if possible ink.

Answer 12

@FibonacciChick666 I'm tryign to solve this geometrically but I can't lol

Answer 13

i want to do something like V=pi r^2 then new V is 1/2V=1/2(pir^2)

Answer 14

how does one deal with the fringe areas?

Answer 15

?

Answer 16

erix, what does a cross section look like?

Answer 17

This one looks like a circle, yes?

Answer 18

is there a hole in it?

Answer 19

Yes.

Answer 20

ok so then we call it a washer

Answer 21

So we use the disc method?

Answer 22

I think shell may work better here, what do you think @inkyvoyd ?

Answer 23

no idea @FibonacciChick666 still tryign to use my primitive math to solve it because it's too late at night to think straight in calculus

Answer 24

lol I'm hitting that same point @wio do you have better insight?