Question

Q.

Tentukan luas permukaan bola yang berdiameter 24 cm!

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Answer 1

DIK :D = 24/2 = 12 CM = JARI-JARIDIT :LP !JAWAB :LP = 4 π R R= 4 . 3,14 . 12 CM . 12 CM= 4 . 3,14 . 144 CM= 4 . 452,16 CM= 1.808,64 CM²

Answer 2

D = R × 2R = D : 2R = 24 : 2R = 12LP = 4 × π × r²LP = 4 × 3,14 × 12 × 12LP = 4 × 37,68 × 12LP = 4 × 452,16LP = 1.808,64 cm²