0
Ata/pi-6
ATA/ATAPI -4, ATA/ATAPI -5, ATA/ATAPI -6, ATA/ATAPI -7 (SATA)
Radius = Circumference/(2*pi)
and then
Area = pi*(radius)2= pi*(circumference)2/(2*pi)2= (circumference)2/(4*pi)
2 pi / 2 = pi.
paralell ata ,serial ata, eide,ultra ata...etc paralell ata ,serial ata, eide,ultra ata...etc paralell ata ,serial ata, eide,ultra ata...etc paralell ata ,serial ata, eide,ultra ata...etc paralell ata ,serial ata, eide,ultra ata...etc