Mathematics, 27.10.2021 14:50 nestergurl101

Bạn Hoa làm một khung ảnh có dạng hình bình hành PQRS với PQ = 18 cm và PS =13cm. Tính độ dài viền khung ảnh bạn Hoa đã làm

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Bạn Hoa làm một khung ảnh có dạng hình bình hành PQRS với PQ = 18 cm và PS =13cm. Tính độ dài viền k...