Resuelve las siguientes operaciones $$ (0.3)^{2}+\sqrt{0.81}+(0.2)^{2}+2,1= $$

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Calculate or simplify the expression $$ (0.3)^{2}+\sqrt{0.81}+(0.2)^{2}+2.1 $$.
Calculate the value by following steps:
- step0: Calculate:
  $$0.3^{2}+\sqrt{0.81}+0.2^{2}+2.1$$
- step1: Convert the expressions:
  $$\left(\frac{3}{10}ight)^{2}+\sqrt{0.81}+0.2^{2}+2.1$$
- step2: Simplify the root:
  $$\left(\frac{3}{10}ight)^{2}+\frac{9}{10}+0.2^{2}+2.1$$
- step3: Convert the expressions:
  $$\left(\frac{3}{10}ight)^{2}+\frac{9}{10}+\left(\frac{1}{5}ight)^{2}+2.1$$
- step4: Evaluate the power:
  $$\frac{9}{100}+\frac{9}{10}+\left(\frac{1}{5}ight)^{2}+2.1$$
- step5: Evaluate the power:
  $$\frac{9}{100}+\frac{9}{10}+\frac{1}{25}+2.1$$
- step6: Rewrite the expression:
  $$\frac{9}{100}+\frac{9}{10}+\frac{1}{25}+\frac{21}{10}$$
- step7: Reduce fractions to a common denominator:
  $$\frac{9}{100}+\frac{9	imes 10}{10	imes 10}+\frac{4}{25	imes 4}+\frac{21	imes 10}{10	imes 10}$$
- step8: Multiply the numbers:
  $$\frac{9}{100}+\frac{9	imes 10}{100}+\frac{4}{25	imes 4}+\frac{21	imes 10}{10	imes 10}$$
- step9: Multiply the numbers:
  $$\frac{9}{100}+\frac{9	imes 10}{100}+\frac{4}{100}+\frac{21	imes 10}{10	imes 10}$$
- step10: Multiply the numbers:
  $$\frac{9}{100}+\frac{9	imes 10}{100}+\frac{4}{100}+\frac{21	imes 10}{100}$$
- step11: Transform the expression:
  $$\frac{9+9	imes 10+4+21	imes 10}{100}$$
- step12: Multiply the numbers:
  $$\frac{9+90+4+21	imes 10}{100}$$
- step13: Multiply the numbers:
  $$\frac{9+90+4+210}{100}$$
- step14: Add the numbers:
  $$\frac{313}{100}$$
La solución de la operación $$ (0.3)^{2}+\sqrt{0.81}+(0.2)^{2}+2.1 $$ es $$ 3.13 $$.
$$ 3.13 $$

Resuelve las siguientes operaciones \( (0.3)^{2}+\sqrt{0.81}+(0.2)^{2}+2,1= \)

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