# Math Is Fun Forum

Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫  π  -¹ ² ³ °

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## #1 2024-02-10 04:25:44

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

### What is the surface area of a circle?

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

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## #2 2024-02-11 01:22:26

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

### Re: What is the surface area of a circle?

?? 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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## #3 2024-02-11 02:41:07

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

### Re: What is the surface area of a circle?

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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## #4 2024-02-11 13:20:53

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

### Re: What is the surface area of a circle?

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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## #5 2024-02-29 09:30:53

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

### Re: What is the surface area of a circle?

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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