<p>An iron pole is &nbsp;<span class="math-editor mathquill-rendered-math"><span class="fraction non-leaf"><span class="numerator">4</span><span class="denominator">5</span><span style="display: inline-block; width: 0;">&nbsp;</span></span></span>&nbsp; m above the ground and&nbsp; &nbsp;<span class="math-editor mathquill-rendered-math"><span class="fraction non-leaf"><span class="numerator">3</span><span class="denominator">10</span><span style="display: inline-block; width: 0;">&nbsp;</span></span></span>&nbsp;m under the ground . what is its total length.?</p>