Perimeter
Circumference, Surroundings, Environs
noun, の adjective
しゅうい
周り (まわり) Circumference, Perimeter, Edge, Surroundings, Locality, Neighborhood
周囲 (しゅうい) Perimeter, Circumference, Surroundings, Environs
直径 (ちょっけい) Diameter
半径 (はんけい) Radius
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