please jawab....jwb nj

<p>Volume tabung = π r^²t</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 3,14 . r^². 4&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 1256</p><p>3,14 x 4 x r² = 1256</p><p>12,56 r² = 1256</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;r² = 1256 : 12,56</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;r² = 100</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;r &nbsp;= √ 100</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;r = 10cm</p><p>Jadi jawaban nya : jari-jari alas tabung= 10cm</p>