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kan sisi miringnya 17 cm, alasnya 16/2
trus pake phytagoras : 17,8,15
jd tinggi alasnya 15 cm
Luas permukaan = La.2 + t.17.2 + t.16
Lp = 1/2.16.15 + 12.17.2 + 12.16
Lp = 120 + 408 + 72
Luas permukaannya = 600 cm²