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4/3r³=36
r³=36 x 3/4
r³=27
r=³√27=3
jari jari=3
luas permukaan bola=4πr²=4π3²=4π.9=36π
π = ∛(3v/4π)
= ∛( 3.36 π/ 4π)
= ∛27
= 3 cm
b. Luas = 4 π r² = 4 . π . 9 = 36 phi cm²