Math Question

[Vakman]

Okay, thanks xD
I was just checking for a friend.
Thanks all.

[afeasfaerw23231233]

I think this should be the answer:


14.28 m^3 (4 s.f.)

1.884 cubic meters

EDIT: No wrong.

EDIT 2: 16.022122535 m^3

Would you please tell us how did you get that number?

r = 9.5
R = 7.5
h = 0.15

v = πh(r^2 - R^2)
  = 0.15π × 34
  = 5.1π

There.

Aren't
r = 7.65
h = 2
?
Considering a pond that has a radius of 7.5M, it would be quite ridiculous to have a deck which has a width of 2m and a height of 0.15m!

[bonfire89]

If you wanted to make this way more complicated then need be you could solve it with calculus http://tutorial.math.lamar.edu/Class...WithRings.aspx

[Barrucadu]

Considering a pond that has a radius of 7.5M, it would be quite ridiculous to have a deck which has a width of 2m and a height of 0.15m!

Well, that's what the question says. A desk of 2m with a height of 15cm.

[afeasfaerw23231233]

But who would need calculus to do such a simple job? haha
If OP has any problem of math I recommend http://www.mathhelpforum.com .

[afeasfaerw23231233]

Well, that's what the question says. A desk of 2m with a height of 15cm.

Isn't 15cm referring to the thickness? If 15cm is the height then I am wrong and you are right.