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棱錐是四個正三角形所圍成的立體圖形. 所以計算其表面積=4*正三角形面積. 而變長為一的正三角形面積: S三角形=1/2*邊長*高 =1/2*1*根號(1的平方-1/2的平方)在正三角形中運用畢氏定理,可求出正三角形的高. =根號3/4 所以棱錐表面積=4*根號3/4 =根號3 回答完畢,希望我的回答你能滿意.
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