The formulas from the RMP include finding areas and volumes; the area of a rectangle, the area of a triangle, the area of a circle, the volume of a cylindrical granary, equations of the first and second degree, geometric and arithmetric progressions, the volume of a truncated pyramid, the area of a semicylinder and the area of a hemisphere
42.
I began a RfC in the article " area of a disk " about changing the title to " area of a circle " . . . many people have weighed in . . . I see there's a requested moves noticeboard, should this be there too somehow now ? talk ) 11 : 37, 7 May 2016 ( UTC)
43.
At about the same time, the Egyptian Rhind Mathematical Papyrus ( dated to the Second Intermediate Period, c . 1600 BCE, although stated to be a copy of an older, Middle Kingdom text ) implies an approximation of as H " 3.16 ( accurate to 0.6 percent ) by calculating the area of a circle by approximating the circle by an octagon.
44.
During the Second World War, the convoys from Bermuda, coded ( coded BHX ) joined at sea with convoys originating at Halifax, Nova Scotia ( coded HX ), before crossing the Atlantic, it having been shown mathematically that-the area of a circle increasing disproportionately to its circumference as its radius is increased-it required relatively fewer warships to protect one large convoy than two smaller ones.
