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**paulb203****Member**- Registered: 2023-02-24
- Posts: 261

Not the area of a circle, but the surface area of a circle.

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**Bob****Administrator**- Registered: 2010-06-20
- Posts: 10,542

?? Surface area is the same as area for a circle. How did this question arise?

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob

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**KerimF****Member**- From: Aleppo-Syria
- Registered: 2018-08-10
- Posts: 225

Perhaps he meant the surface area of a sphere which is 4*pi*R^2.

Every living thing has no choice but to execute its pre-programmed instructions embedded in it (known as instincts).

But only a human may have the freedom and ability to oppose his natural robotic nature.

But, by opposing it, such a human becomes no more of this world.

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**Jai Ganesh****Administrator**- Registered: 2005-06-28
- Posts: 47,752

Hi paulb203,

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**amnkb****Member**- Registered: 2023-09-19
- Posts: 253

paulb203 wrote:

Not the area of a circle, but the surface area of a circle.

a circle is in the plane so it's flat

It doesnt have a 'surface' to have an area of

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