Muchidzidzo chePimanyika, taramunyongo (Radius) izwi rinoreva mutsetse unobatanidza goko redenderedzwa nemuganhu wedenderedzwa; taramunyongo ndiyo inotara panogumira denderedzwa. Muganhu wedenderedzwa une nhambwe dzakafanana panzvimbo dzose zvichibva pakati (centre) pedenderedzwa.