Agar luas permukaan bola
dan volume bola nilainya sama.
Jari-jari bola = ............ cm
(a.) 3π
(b.) 6÷π
(c.) 3
(d.) 6π
(e.) 3÷π
dan volume bola nilainya sama.
Jari-jari bola = ............ cm
(a.) 3π
(b.) 6÷π
(c.) 3
(d.) 6π
(e.) 3÷π
Materi : Bangun Ruang Sisi Lengkung
V( Bola ) = Lp( Bola )
4/3 . πr³ = 4 . πr²
4/3 . r³ = 4 . r²
4r³ = 12r²
4r = 12
r = 3 cm
Semoga bisa membantu
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