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r√3 = 10√3
r = (10√3)/√3
r = 10 cm
La = r^2
La = 10^2
La = 100 cm2
Jawaban: C
⇒ s√3 = 10√3
⇒ s = 10 cm
maka
La = s²
= 10²
= 100 cm²
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