From Wikipedia, the free encyclopedia
Tufe ni umbo la gimba linalofanana na mpira au chungwa. Lakini wala mpira wala chungwa ni tufe kamili.
Katika elimu ya hisabati, hasa jiometri tufe ni jumla la nukta zote zilizopo na umbali uleule (=rediasi, nusukipenyo) kutoka nukta nukta moja (kitovu cha tufe).
Tufe ni mzunguko wa duara katika wanda (dimension) la tatu.
Mjao wa tufe (=V) unaelezwa kwa fomula ifuatayo:
(tamka pi) ni namba ya duara inayolingana takriban na 3.1416.Pi inaweza kukadiriwa na kuwa 3.14/²²/7.
Eneo la uso wa tufe (=A) hukadiriwa kufuatana na fomula ifuatayo:
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