I. Simbi kureba uye ukuru Simbi kureba saizi ndiyo yakasarudzika saizi yemarudzi ese esimbi, inoreva kureba, upamhi, kureba, dhayamita, radius, mukati dhayamita, kunze dhayamita uye ukobvu hwemadziro zvichingodaro.Mayuniti emutemo ekuyera pakureba kwesimbi imita (m), centimita (cm), millimeter...
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