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52 = 4 X s
52/4 = s
s = 13 cm
phytagoras-kan
13^2 - 5^2
169 - 25
144
akar dari 144
12cm
d2 = 2 X 12
= 24cm
luas = 1/2 X d1 X d2
= 1/2 X 10 X 24
= 120cm^2
ket: ^(pangkat)