What value should come in the place of question mark (?) in the following questions ?
$$(11)^{2} + (9)^{2} - (14)^{2} + ? = 3^{2}$$
$$0.5 \times 3.9 \div 1.3 = ? + 0.5$$
$$\frac{15}{31}\div\frac{90}{186}\times\frac{729}{9}=(?)^{2}$$
81% of 2300 - 34% of 596 = ?
$$3.1 \times 2.6 \times 1.5 =?$$
$$(\frac{144}{16}\times\frac{828}{9})=?+325$$
$$9352 - 2569 + 7153 = 13900 + ?$$
23% of 1630 = ?
$$73 + 238 \div 14 - 71 = ?$$
$$\sqrt{576}+\sqrt{841}=?$$
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