Đáy bé :
150x80%=120(m)
Chiều cao :
\(120\times\frac{2}{3}=80\left(m\right)\)
Diện tích :
\(\frac{\left(120+150\right)\times80}{2}=10800\left(m^2\right)\)
Đ/s:..........
#H
Đáy bé thửa ruộng hình thang là:
\(150\times80\%=120\left(m\right)\)
Chiều cao thửa ruộng hình thang là:
\(120\times\frac{2}{3}=80\left(m\right)\)
Diện tích thửa ruộng hình thang là:
\(\frac{1}{2}\times\left(150+120\right)\times80=10800\left(m^2\right)\)
Đáp số: \(10800m^2\)
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