一个三角形的底是2.5m，高是2.8m，它的面积是_1m2，和它等底等高的平行四边形的面积是_2m2。_刷题宝

题干

一个三角形的底是2.5m，高是2.8m，它的面积是____ m²，和它等底等高的平行四边形的面积是____ m²。

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3.5,7

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