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452,16= 3,14r kuadrat
r^2 = 144
r = 12
t= 13 kuadrat-12 kuadrat
t= akar 25 kuadrat
t= 5
volume = 1/3 x l.alas x tinggi
volume = 1/3 x 452,16 x 5
volume = 753,6
La = πr²
452,16 = 3,14 x r²
r² =
b.
t² = 13² - 12²
t² = 169 - 144
t = √25
t = 5 cm
c.
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