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52=4s
4s=52/4
=13
d2=13²-5²²
=169-25
=√144=12
luas= d1 x d2 / 2
10 x 24 /2=240/2=120
K = 4s
52 = 4s
s = 13 cm
cari diagonal yg lainnya dulu
dengan phytagoras =
=
= 12 cm
L =
L =
L = 120 cm2
semoga membantu