Khánh ly Nguyễn
Hỏi từ APP VIETJACK
Một mảnh đất hình thang có đáy lớn 25m,đáy bé bằng 80% đáy lớn và hơn chiều cao 4m . Tính diện tích mảnh đất đó
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1 câu trả lời 92
4 tháng trước
Đáy bé của mảnh đất hình thang đó là:
b=0.8×25=20(m)
Chiều cao của mảnh đất hình thang đó là:
h=b+4=20+4=24(m)
Diện tích của mảnh đất hình thang đó là:
S=
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Vậy diện tích mảnh đất đó là 540m2
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