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مساحة الأسطوانة الكلية = 2×π×نق× (نق+ع) = 2×3.14×20× (20+125.66) = 18,304.18سم². حجم الاسطوانة = π×نق²×ع = 3.14 ×20²×125.66= 157,909.01 سم³.
حقوق الطبع والنشر: شركة خنان ليمينغ لتكنولوجيا الصناعة الثقيلة المحدودة. رخصة أعمال
