Hey I need to figure square footage of a dome's surface area. The dome is 58' tall to the center of the dome and 112' in diameter at the base. Anyone know the formula to figure this I tried to get a hold of my daughter who is a math whiz but she must have classes today and I haven't heard from her. It's kind of embarrassing having to ask your kids things like this so if someone can help me I can tell her I was just calling to see how every thing is going

 

Howdy Jazz,
Formula for Square footage of a dome is 2 x pi x r x r

So in your case it would be 2 x 3.1415 x 56 x 56

Resulting in 19,703.488 square feet.

 

Daaammmmnnnnn, if this is right you spent way to much time away from the girls in yer young life. I'm impressed, not smart enough to know your right or wrong, but I'm impressed.

 

Maybe I'm just having a brain fart here but a perfect sphere would be height is equal to radius correct? so since this isn't a perfect sphere because height is 58' and radius is only 56' that wouldn't be a correct square footage , would it?
Thanks for your reply Buddy. Long time no talk. Maybe this next weekend you should try to slip on over to my place at the lake Do a little fishin and a little

 

He may have but I'll tell ya what.... He knows his pi

 

It would actually be 2 x pi x Radius(at the ground) x Height of the dome.


2 x 3.14 x 58 x 56 = 20407.786 sq. ft.



MMMMMMM Pie.....

 

Ok, so that will give my sq. ft. I wasn't sure if 2 x pi x r x ht. will give me the correct sq. footage. I do know that 2 x pi x r x r would if it was a perfect sphere. Thanks

 

How many yards of concrete will it take to fill a Big Cone 50 Foot Tall with a 10 foot opening that's 1/3 full of rocks?

That was a real question on my entry test at work

 

32.32

I had to look that formula up.

 

Well, someone needs a little help on the spelling end as well.