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2023-01-03 20:39:33
a) Phần trăm diên tích mảnh đất làm nhà chiếm:
\(100-40-35=25\%\)
b) Diện tích đất làm nhà là: \(620\times\dfrac{25}{100}=155\left(m^2\right)\)
Đáp số: a) 25%
b) 155 m2