Jawapan

  • iiio
  • Tangan Bantuan
2016-10-09T21:29:58+08:00
Luas tapak=22/7×5×5
=78/4/7cm²
luas permukaan melengkung=22/7×5×t
=15/5/7t
78/4/7+15/5/7t=298/4/7
15/5+7t=298/4/7-78/4/7
=220
t=(220)/(15/5/7)
=14cm