# Math Help - Argh. lost ! Volume

1. ## Argh. lost ! Volume

h=1.35

r = 12.5

V = ½x3.14xr2xh - 2/3xr2xh

Can someone figure out doing that one ?

2. Hello, Gundel!

h = 1.35, r = 12.5

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

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

Don't you have a calculator?

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

3. ## wop

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

4. 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 $x\times y$ when $x=2$ and $y=3$?

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