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Ringjoon ja ring

Ringjoon ja ring. Kai Mitt. Ringjoon on ringi ümbritsev joon. RING. RINGJOON. Ring on 360˚. Diameeter on sirglõik, mis ühendab kahte ringjoone punkti ja läbib keskpunkti. d = 2r. DIAMEETER d. RAADIUS r. Raadius on sirglõik, mis ühendab ringi keskpunkti ringjoone punktiga.

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Ringjoon ja ring

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  1. Ringjoon ja ring Kai Mitt

  2. Ringjoon on ringi ümbritsev joon. RING RINGJOON Ring on 360˚.

  3. Diameeter on sirglõik, mis ühendab kahte ringjoone punkti ja läbib keskpunkti. d = 2r DIAMEETER d RAADIUS r Raadius on sirglõik, mis ühendab ringi keskpunkti ringjoone punktiga.

  4. Sektor on kahe raadiuse vahele jääv osa ringist. SEKTOR Kaar on osa ringjoonest. A B AB – kaar AB

  5. Ringjoone pikkuse valem: C – ringjoone pikkus C = d r – raadius d – diameeter C = 2r  = 3,14 Ringi pindala valem: S – ringipindala S = r2 r – raadius  = 3,14

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