Need math whizzes

[akarunway 1]

What is the surface area of a sphere 17' in diameter? What is the volume of a sphere 15' in diameter. I have the formulas but the math ain't jibbing. HELP

I hold it true, whate'er befall;
I feel it, when I sorrow most;
'Tis better to have loved and lost
Than never to have loved at all.

[shropshire 0]

Formula for the Surface Area of sphere = 4 pi r2

Formula for the Volume of sphere = 4/3 pi r3


Off you go then, you can do the maths......

(.)Y(.)
Chivalry is not dead; it only sleeps for want of work to do. - Jerome K Jerome

[Jeffwxyz 0]

If the poster is a cute girl then give her the answers. If it is a he, then make him do it.

[shropshire 0]

(.)Y(.)
Chivalry is not dead; it only sleeps for want of work to do. - Jerome K Jerome

[SuFantasma 0]

Quote

What is the surface area of a sphere 17' in diameter? What is the volume of a sphere 15' in diameter. I have the formulas but the math ain't jibbing. HELP

Area of a Spehere 17' in diameter is 106.76 feet
Volume of a Spehere 15' in diameter is 31.4 cubic feet

Y yo, pa' vivir con miedo, prefiero morir sonriendo, con el recuerdo vivo".
- Ruben Blades, "Adan Garcia"

[shropshire 0]

I make it ....

908.2857143 Sq ft

and

1767.857143 Cubic ft

(.)Y(.)
Chivalry is not dead; it only sleeps for want of work to do. - Jerome K Jerome

[wildcard451 0]

Quote

Quote

What is the surface area of a sphere 17' in diameter? What is the volume of a sphere 15' in diameter. I have the formulas but the math ain't jibbing. HELP

Area of a Spehere 17' in diameter is 106.76 feet
Volume of a Spehere 15' in diameter is 31.4 cubic feet

nope.

V= 4/3pi(7.5)^3 = Approx 1767.141 cuft
SA = 4pi (8.5)^2 = 907.92 sqft

[shropshire 0]

close enuff

(.)Y(.)
Chivalry is not dead; it only sleeps for want of work to do. - Jerome K Jerome

[maxmadmax 8]

Cool math wars!

Go figure pi.

And run it out to a billion or so decimals....

And bring beer.

Don't go away mad....just go away!

[wildcard451 0]

Quote

Cool math wars!

Go figure pi.

And run it out to a billion or so decimals....

And bring beer.

3.141592 will do for most calculations

[shropshire 0]

ummmmmmmmm Pie

(.)Y(.)
Chivalry is not dead; it only sleeps for want of work to do. - Jerome K Jerome

[1969912 0]

Quote

I make it ....

908.2857143 Sq ft

and

1767.857143 Cubic ft

nope

"Once we got to the point where twenty/something's needed a place on the corner that changed the oil in their cars we were doomed . . ."
-NickDG

[1969912 0]

Quote

Quote

Quote

What is the surface area of a sphere 17' in diameter? What is the volume of a sphere 15' in diameter. I have the formulas but the math ain't jibbing. HELP

Area of a Spehere 17' in diameter is 106.76 feet
Volume of a Spehere 15' in diameter is 31.4 cubic feet

nope.

V= 4/3pi(7.5)^3 = Approx 1767.141 cuft
SA = 4pi (8.5)^2 = 907.92 sqft

nope

"Once we got to the point where twenty/something's needed a place on the corner that changed the oil in their cars we were doomed . . ."
-NickDG

[shropshire 0]

What do you make it then?

(.)Y(.)
Chivalry is not dead; it only sleeps for want of work to do. - Jerome K Jerome

[SuFantasma 0]

Quote

Quote

Quote

What is the surface area of a sphere 17' in diameter? What is the volume of a sphere 15' in diameter. I have the formulas but the math ain't jibbing. HELP

Area of a Spehere 17' in diameter is 106.76 feet
Volume of a Spehere 15' in diameter is 31.4 cubic feet

nope.

V= 4/3pi(7.5)^3 = Approx 1767.141 cuft
SA = 4pi (8.5)^2 = 907.92 sqft

Ooopsss.... you are right, I left out the exponentials on both calculations.

Y yo, pa' vivir con miedo, prefiero morir sonriendo, con el recuerdo vivo".
- Ruben Blades, "Adan Garcia"

[1969912 0]

Not cubic or square FEET. It's Cu or Sq INCHES.

EDIT: I didn't check the calcs. Just noticed the in/ft typo or whatever....

"Once we got to the point where twenty/something's needed a place on the corner that changed the oil in their cars we were doomed . . ."
-NickDG

[1969912 0]

Quote

What do you make it then?

Just checked the calcs.

For volume I get 1,767 cu in: 4/3(pi)(r^3) = (1.33)(3.142)(7.5^3) = (1.33)(3.142)(422) = ~1767 cu in

For surface area I get 908 sq in: 4(pi)(r^2) = (4)(3.142)(8.5^2) = (4)(3.142)(72.25) = ~908 sq in

"Once we got to the point where twenty/something's needed a place on the corner that changed the oil in their cars we were doomed . . ."
-NickDG

[jakee 1,254]

Quote

Quote

What do you make it then?

Just checked the calcs.

For volume I get 1,767 cu in: 4/3(pi)(r^3) = (1.33)(3.142)(7.5^3) = (1.33)(3.142)(422) = ~1767 cu in

For surface area I get 908 sq in: 4(pi)(r^2) = (4)(3.142)(8.5^2) = (4)(3.142)(72.25) = ~908 sq in

Nope.

This ' designates feet, this " designates inches. The OP's question as stated is about feet. If you're going to be a pedant, do not be wrong.

Do you want to have an ideagasm?

[muff528 3]

Original units by the OP are in feet, not inches. also the volume calculation you did was for a 17' sphere. OP spec'd a 15' sphere.

Additionally -- pie are NOT square.. pie are ROUND. CORNBREAD are square. I thought I'd be first to point that out since it will inevitably be mentioned in this thread anyway.

[1969912 0]

Quote

Original units by the OP are in feet, not inches. also the volume calculation you did was for a 17' sphere. OP spec'd a 15' sphere.

Additionally -- pie are NOT square.. pie are ROUND. CORNBREAD are square. I thought I'd be first to point that out since it will inevitably be mentioned in this thread anyway.

Oops. You guys are right - OP was feet. I can't read. Time for a brew

"Once we got to the point where twenty/something's needed a place on the corner that changed the oil in their cars we were doomed . . ."
-NickDG

[Coreece 190]

Quote

ummmmmmmmm Pie

I didn't expect to see this type of reply. Its the first thing I saw when I came back to check the staus of this thread and it caught me by suprise.



don't know why its so funny to me....i'm in hysterics over here...maybe because I'm picturing Homer Simpson saying it...

Your secrets are the true reflection of who you really are...

[wildcard451 0]

Quote

If you're going to be a pedant, do not be wrong.

This.

/whee.

[shropshire 0]

Quote

Quote

Original units by the OP are in feet, not inches. also the volume calculation you did was for a 17' sphere. OP spec'd a 15' sphere.

Additionally -- pie are NOT square.. pie are ROUND. CORNBREAD are square. I thought I'd be first to point that out since it will inevitably be mentioned in this thread anyway.

Oops. You guys are right - OP was feet. I can't read. Time for a brew

That'w why you guys need to convert to SI Units (There's a thread in the Dark Side forum).

(.)Y(.)
Chivalry is not dead; it only sleeps for want of work to do. - Jerome K Jerome

[billeisele 122]

CORNBREAD are square. I thought I'd be first to point that out since it will inevitably be mentioned in this thread anyway.

[muff528 3]