Question

NEED HElP!!! :)

Answer 1

shoot

Answer 2

A cylinder with radius r and height 2r+4 contains a cube with edge length r√2. What fraction of the cylinder’s volume is taken up by the cube? Write answer in simplified form.

Answer 3

so Volume of cube = S^3, yeah?
in this case = (r x sqrt 2)^3

Answer 4

sqrt(2) r / Pi (r+2).

Answer 5

right ok, but I am not sure what to do with it

Answer 6

so volume of the cube =

\[2 \sqrt{2} r ^{3}\]

Answer 7

right got that

Answer 8

Volume of cylinder = pi r^2 x ht
= (pi r^2) x (2r + 4)

Answer 9

V_cylinder = (Pi r^2) (2r+4)
V_cube = (sqrt(2) r)^3 {I assume that's what you meant.}

Fraction = V_cyl / V_cube

= (2Pi r^3 + 4Pi r^2) / (2sqrt(2) r^3)

= (2Pi r + 4Pi) / 2sqrt(2) r = Pi (r+2) / sqrt(2) r

= Pi sqrt(2) (r+2) / 2r

Ed: Oops - I inverted this... the correct answer is sqrt(2) r / Pi (r+2)

Answer 10

Ive answered this question b4.

Answer 11

^^^^^^ what he said ;)

Answer 12

:P.

Answer 13

Thanks guys

Answer 14

Nathan , you know I found that answer on the internet before right?