Tolong jawab ya soalnya ini masuk di penilaian akhir semester bsok , pleaseee

231 liter = Volume Tabung + Volume Kerucut

231 = ( 22/7 . r² . 10) + ( 1/3 . 22/7 . r² . 6)

231 = (220/7 r²) + (44/7 r²)

231 = 264/7 r²

231 . 7 = 264r²

1.617 = 264r²

1.617 / 264 = r²

6,125 = r²

r² = √6,125

r = 2,474........ >> 2,5 dm (D)