# Argh. lost ! Volume

• Nov 10th 2006, 04:46 AM
Gundel
Argh. lost ! Volume
h=1.35

r = 12.5

V = ½x3.14xr2xh - 2/3xr2xh

Can someone figure out doing that one ? :eek:
• Nov 10th 2006, 05:43 AM
Soroban
Hello, Gundel!

Quote:

h = 1.35, r = 12.5

$\displaystyle V \:= \:\frac{1}{2}\pi r^2h - \frac{2}{3}r^2h$

Can someone figure out doing that one ? . . . figure out what ?

Don't you have a calculator?

$\displaystyle V \;= \;\left(\frac{1}{2} \times \pi \times 12.5^2 \times 1.35\right) - \left(\frac{2}{3} \times 12.5^2 \times 1.35\right)$

• Nov 10th 2006, 05:45 AM
Gundel
wop
the thing is that i'm a **** to math. so need someone to tell me how to do it
• Nov 10th 2006, 05:48 AM
Quick
Quote:

Originally Posted by Gundel
the thing is that i'm a **** to math. so need someone to tell me how to do it

What is the value of $\displaystyle x\times y$ when $\displaystyle x=2$ and $\displaystyle y=3$?

So what is the value of $\displaystyle \frac{1}{2}\pi r^2h-\frac{2}{3}r^2h$ when $\displaystyle r=12.5$ and $\displaystyle h=1.35$?