From the same figure, the remaining area is 672 cm&sup2; out of the total 756 cm&sup2;.<br><br>Fraction left = <span class="math-inline">\(\frac{672}{756}\)</span> = <span class="math-inline">\(\frac{8}{9}\)</span>.<br><br>Final Answer: <span class="math-inline">\(\frac{8}{9}\)</span>