Mathematics, 23.08.2021 05:10 yulaarmstrong

Cho hình thang ABCD có hai cạnh đáy là AB, CD và CD có độ dài gấp 3 lần độ dài AB. Hai đường chéo của hình thang là AC và BD, chúng cắt nhau tại điểm O. Biết diện tích hình tam giác OCD bằng 15 cm2, hãy tính diện tích hình thang ABCD

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Cho hình thang ABCD có hai cạnh đáy là AB, CD và CD có độ dài gấp 3 lần độ dài AB. Hai đường chéo củ...

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