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maka :
t.sisi tegak limas
= akar dr 7²+24²
= akar dr 49+576
= √625
= 25 cm
jadi,
Lp limas = L alas + jumlah L sisi tegak
= s² + 4.1/2.a.t
= 14² + 4.1/2.14.25
= 196 + 700
= 896 cm²