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------- = -----------
2 2
120
= -------- = 60 cm2 .
2
K=10+x+x
36=10+2x
2x=36-10
2x=26
x=13 cm
Phytagoras.
Sama kaki maka dibuat segitiga siku-siku
luas= axt:2
= 10 x 12 :2
= 60