Tính diện tích hình bên toán lớp 5 năm 2024

cho hình bên dưới .tính diện tích hình thang,biết bán kính hình tròn là 5cm và đáy lớn gấp 3 lần đáy bé.

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Muốn tính diện tích hình tròn lớp 5 tả làm như thế nào?

Quy tắc: Muốn tính diện tích của hình tròn ta lấy bán kính nhân với bán kính rồi nhân với số 3,14 . (S là diện tích hình tròn, r là bán kính hình tròn).nullToán lớp 5 trang 100 Diện tích hình tròn - Loigiaihay.comloigiaihay.com › toan-lop-5-trang-100-dien-tich-hinh-tron-a104778null

Diện tích xung quanh và diện tích toàn phần của hình hộp chữ nhật khác nhau như thế nào?

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