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4/3πr³ = 36π
4/3 r³ =36
r³ = 36x 3/4
r³ = 27
r = ∛27
r = 3
lb = 4πr²
=4xπx3x3
=36 π
4/3πr^3 = 36π
4/3 r^3 = 36
r³ = 36 x 3/4
r³ = 27
r = 3V27
r = 3 cm
Luas KB = 4πr^2
= 4 x π x 9
= 36 π