Bantu Jawab Kak

<p>Jawaban yang tepat adalah D. &nbsp;174 m</p><p>&nbsp;</p><p>Pembahasan :</p><p>r = 7 m</p><p>𝞹 = 22/7</p><p>K = 2𝞹r + 2r</p><p>&nbsp; &nbsp; = (2 x 22/7 x 7) + (2 x 7)</p><p>&nbsp; &nbsp; = 44 + 14</p><p>&nbsp; &nbsp; = 58 m</p><p>Panjang besi = 3 x Keliling tanah</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 3 x 58</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 174 m</p>