maths help please

tanya2007

hi guys need a little help out ,sorry if its not in the right place . pi r squared h?? thanks

callaway92

H is the height of the sphere, hemisphere etc.

therefore is the height is 5

if the question is in terms of pye, you dont calculate pye in the question at all.

if "in terms of pye" isn't in the question you use pye.

so, in a calculator you type (pye)(radius)^2(h)

jarvisob

It's for finding the volume of a cylinder if that's what your trying to find out.

tanya2007

thank you so much. think i get it now

brndonnie

can someone help me the math problem and explain what happens to the 6 and the 4? really confused and know it is something simple but really need to understand why.

Thanks

6 x √3 a² = 3√3 a²
4 2

brndonnie

6 x √3 a² = 3√3 a²
4 2

cant seem to get the equation to show properly but √3 is being divided by 4. And turns into √3 being divided by 2. Sorry for the confusion

RolandIRL

6/4 = 3/2 by cancellation, so
6/4 x rt(3) a^2 = 3/2 x rt(3) a^2

you take out a common factor of 2 into 6 and 4 and the factors remaining are 3 and 2 respectively