Taka Nuvia

Oh, mathematical? Resolving a Physics problem is more satisfying, in my opinion.

Zeene, if someone ever got to the solution of that, maths would just implode.

@Zeene: riiight...

@The Renegade Emperor: I actually like both, but mathematical problems are usually much harder for me, which therefore of course also makes me happier if I do solve one ^^"

Actually, it's rather simple.

The surface area of a circle = pi*r^2, while the formula for the surface area of a rectangle is l*w.

However, since this is a square we're talking about, l*w=l^2=w^2

and if we then say l=w=sqrt(pi)*r, the r being the same r we used for the circle, the surface area of a square = (sqrt(pi)*r)^2 = pi*r^2, which is also the surface area of the circle.