Question

This problem is not as long and difficult as it seems. I just need someone to help clarify.

Answer 1

Measure and record the diameter and height of the cylindrical object you have chosen. Be sure to use the same measurement for both (either centimeters or inches).
Diameter 3” Height 3 ½ “
Apply the formula of a right circular cylinder (V = pir2h) to find the volume of the object. (Note: Be sure to find the radius from the diameter measurement by dividing by 2.)
32.97=pi*1.5*2*3.5
Now suppose you knew the volume of this object and the relation of the height to the radius, but did not know the radius. Rewriting the equation with one variable would result in a polynomial equation that you could solve to find the radius.

Rewrite the formula using the variable x for the radius. Substitute the value of the volume found in step 2 for V and express the height of the object in terms of x plus or minus a constant. For example, if the height measurement is 4 inches longer than the radius, then the expression for the height will be (x + 4).

Simplify the equation and write it in standard form. If the equation contains decimals, multiply each term by a constant that will make all coefficients integers.

Answer 2

I just need to know what to do with the pi in the polynomial equation :/

Answer 3

pi*1.5*2*3.5, that 1.5 is squared, not multiplied by 2

Answer 4

oh crap yes thank you. The class doesnt copy and paste clearly. that'll help a bit

Answer 5

and pi is just a number, approximate it or even it out in the end

Answer 6

now, the question is asking you to write the equation in 1 term, x, instead of r and h for some sadistic reason

Answer 7

yeah. believe it or not, this is meant to be a fun activity

Answer 8

the thing im struggling with most is the multiplication to make integers. what in gods name am i going to multiply by to make pi an integer?

Answer 9

you cant make pi an integer, you have to rnd at the end

Answer 10

? im sorry i dont quite understand

Answer 11

oh round!

Answer 12

so just make it 3?

Answer 13

lets see the equation for your polynomial, then work from that

Answer 14

Simplify the equation and write it in standard form.

If the equation contains decimals, multiply each term by a constant that will make all coefficients integers. .... this instruction is terrible and you should slap someone for it when you get the most opportune chance :)

Answer 15

-x^2(x+2)-pi-33=0 does this look correct?

Answer 16

+pi* yes?

Answer 17

lets see what i come up with

let x = the radius

pi*x^2*h

but h in terms of the radius is: