Fails a basic sanity check. Wrong formula.

A square of 3" on a side would be an area of 9 square inches. A circle
of 3" diameter would fit inside that 3" square and not fill it.
Therefore it is less area than the square and less than 9 square inches.

A square of 1.5" on a side is an area 2.25 square inches. Two of them
would add up to 4.5 square inches. 1.5" circles again would have a
smaller areas than 1.5" squares so would be less than 4.5 combined.

Mark

OlRivrRat wrote:
> Dennis
>
> Also ~ the area of a circle is found by ~ Pi x Diameter. The vol' of a
> cylinder is Pi x (Radius x Radius).
>
> So your 3" piston has an "FootPrint" of 9.428 Sq" & your two 1.5s will
> also = 9.428 Sq".
>
> ORR ~ DeanB
>
>