TAHURA INYISHUIbi bibarwa gute?
Inyongera y'ibizotakara ipfuka gukata, guhuza imirongo, ibifise ikibazo no gusanura muri kazoza. Imiterere igoye ishobora gusaba inyongera nini.
Igereranya ry'ibikoresho vyo hasiUbuso bw'ibikoresho = uburebure × ubwaguke × (1 + ibizotakara %)
Akarorero ngirakamaro
Icumba ca fiti 15 × 12 gifise ubuso bwa fiti kare 180. Wongereyeko 10% y'ibizotakara, utegure kugura hafi fiti kare 198.