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@hartnn Help am I correct ?
where's the cone ?
read cylinder in the question
OOps I am sorry again
if u cut a plane right in the middle and examine this cross section
now all you need to do is write Y as a function of x
sorry this is is wrong division
use open study more ill cya later
can u see that no matter what the shape that will show up on that plane is always a Triangle and a square in the middle
say i rotate that plane around the z* axis
so what we want to do is, look at that eye level shape you see only
then u will see a square
haha yah, cute little person.
if the person was standing on the x axis he will see this
similariliy he will see the cone as a triangle
but this doesnt hamper our relationship of the radius and height
these are equal in dboth diagrams, except the radius of the circle just looks like the length of the square and the hieght of the cone and cylinder is the hieght of square and triangle
triangle ABC is similar to EDC because they have equal angles
a 90 degree angle angle C which is common in both triangles and obviously that means 180-c-90 = same angle for A and E
now that we have proven these are also similar triangles we can write the proportion of the smaller triangle sides = the proportion of the bigger triangle sides
if you are still following... all this then id be amazed.. its hard to teach on here, we can only really help u solve thing and help you see a little better but teaching concepts not that easy
yes im still following and your a big help now i understand! really thanks! :)
okay then all thats left is to fill in the information you know and write that proportion equation
okay so we know triangle ABC~ ECD so CB/BA = CD/DE
CB= R,BA=h,CD=R-x,DE=y CB/BA=CD/DE becomes R/h=(R-x)/y solve for y y=h(R-x)/R
h and r are just some random constant so now u have y = f(x) some function of x
one more thing, whats the meaning of "r,h are constant?"
they are not given.. they can be any number, given those numbers your cone and cylinder will look differently
basically you solved the formula right now so when they give you a value for r and h you can just plug it into the formula and you quickly know how y is changing as function of x
Done ! :) hopefully next time i post. you're online thanks.
u dont need me to solve lol
hahaha ok I continue my homework. Godbless.