Question

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​

Answer 1

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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