sophmore algebra help?

the volume of a cylinder V is given by the formula V=πr²h, where r is the radius and h is the height.

a. solve the formula for h.

b. find the height of a cylinder with volume 2500π feet and radius 10 feet.

Question

sophmore algebra help?

the volume of a cylinder V is given by the formula V=πr²h, where r is the radius and h is the height.

a. solve the formula for h.


b. find the height of a cylinder with volume 2500π feet and radius 10 feet.

mathmale · Answer

First of all, Culty, what does it mean to "solve the formula for h"?

anonymous · Answer

doesn't it mean find h?

mathmale · Answer

What have you done in the past in regard to solving a formula for one of the variables?

anonymous · Answer

sorry im reallllly bad at math

anonymous · Answer

i don't know. we took notes and stuff on this but i don't understand how to do this.

mathmale · Answer

In this context, what would "find h" mean?  I'm not trying to give you a hard time; I would like to help you connect with work you've done before.

anonymous · Answer

i just thought it meant solve the equation to get h

the_fizicx99 · Answer

I think its asking to solve for H or leave it on the right side alone

the_fizicx99 · Answer

Hmm, I think its H = V/pi*r^2

anonymous · Answer

we did a problem together in class do you want me to write that one out and show you how we did it?

the_fizicx99 · Answer

Sure

anonymous · Answer

no idea how you get that at all. just looks like a bunch of numbers

the_fizicx99 · Answer

Ohhh, "Solve the formula for H" Meaning plug in the given values and solve for h

anonymous · Answer

the equation of a line containing the points (a,0) and (0,b) is given by the formula x/a + y/b = 1.

a. solve the equation for y. (the answer is y=(1-x/a)b

b. suppose the line contains the points (4,0), and (0,-2). if x = 3, find y. (answer is y= -1/2)

anonymous · Answer

that's the one we did together in class. i guess it's kinda like the one i'm asking

the_fizicx99 · Answer

Hm, I'm not sure how you got that but try asking @SolomonZelman

anonymous · Answer

i just need help with the one i asked about

mathmale · Answer

You're given  V=πr²h.  You want to solve this equation for h.  In other words, you want to isolate h.

Write  V=πr²h  and divide both sides by  πr².  The result is your formula for h.  That's it.

the_fizicx99 · Answer

O.O That what I did but it said "solve for h" I thought it meant 2 things, isolate h or solve for the height with the given values lol

anonymous · Answer

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