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pake rumus phytagoras
9, 12, 15
24 : 2 = 12
jadi panjang salah satu diagonalnya 9 x 2 = 18
luas = 24 x 18 / 2 = 216
60=4×s
s=60/4
s=15
diagonal 2=15²-12²
=225-144
=√81
=9
=9×2=18
luas = d1×d2/2
24×18 / 2=432/2=216