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例1一块面积是12.56平方分米的铁皮,已知它的底是3.14分米,求三角形铁皮的高是多少分米?错解: 12.56÷3.14=4(分米)
Example 1 An area of 12.56 square decimetres, known at the bottom is 3.14 decimeters, how many decimeters are found in a triangular form? Misconstructed: 12.56 ÷ 3.14 = 4 (decimeters)