Solve for r 16=4/3pir^3

$16 = \frac{4}{3} π r^{3}$

Rewrite the equation as $\frac{4}{3} \cdot (π r^{3}) = 16$ .

$\frac{4}{3} \cdot (π r^{3}) = 16$

Multiply both sides of the equation by $\frac{1}{\frac{4}{3} π}$ .

$\frac{1}{\frac{4}{3} π} (\frac{4}{3} \cdot (π r^{3})) = \frac{1}{\frac{4}{3} π} \cdot 16$

Simplify both sides of the equation.

Simplify the left side.

Simplify $\frac{1}{\frac{4}{3} π} (\frac{4}{3} \cdot (π r^{3}))$ .

Combine $\frac{4}{3}$ and $π$ .

$\frac{1}{\frac{4 π}{3}} (\frac{4}{3} \cdot (π r^{3})) = \frac{1}{\frac{4}{3} π} \cdot 16$

Multiply the numerator by the reciprocal of the denominator.

$1 \frac{3}{4 π} (\frac{4}{3} \cdot (π r^{3})) = \frac{1}{\frac{4}{3} π} \cdot 16$

Multiply $\frac{3}{4 π}$ by $1$ .

$\frac{3}{4 π} (\frac{4}{3} \cdot (π r^{3})) = \frac{1}{\frac{4}{3} π} \cdot 16$

Cancel the common factor of $π$ .

Factor $π$ out of $4 π$ .

$\frac{3}{π \cdot 4} (\frac{4}{3} \cdot (π r^{3})) = \frac{1}{\frac{4}{3} π} \cdot 16$

Factor $π$ out of $\frac{4}{3} \cdot (π r^{3})$ .

$\frac{3}{π \cdot 4} (π (\frac{4}{3} \cdot (r^{3}))) = \frac{1}{\frac{4}{3} π} \cdot 16$

Cancel the common factor.

$\frac{3}{π \cdot 4} (π (\frac{4}{3} \cdot (r^{3}))) = \frac{1}{\frac{4}{3} π} \cdot 16$

Rewrite the expression.

$\frac{3}{4} (\frac{4}{3} \cdot (r^{3})) = \frac{1}{\frac{4}{3} π} \cdot 16$

Combine $\frac{4}{3}$ and $r^{3}$ .

$\frac{3}{4} \cdot \frac{4 r^{3}}{3} = \frac{1}{\frac{4}{3} π} \cdot 16$

Multiply $\frac{3}{4}$ by $\frac{4 r^{3}}{3}$ .

$\frac{3 (4 r^{3})}{4 \cdot 3} = \frac{1}{\frac{4}{3} π} \cdot 16$

Multiply.

Multiply $4$ by $3$ .

$\frac{12 r^{3}}{4 \cdot 3} = \frac{1}{\frac{4}{3} π} \cdot 16$

Multiply $4$ by $3$ .

$\frac{12 r^{3}}{12} = \frac{1}{\frac{4}{3} π} \cdot 16$

Cancel the common factor of $12$ .

Cancel the common factor.

$\frac{12 r^{3}}{12} = \frac{1}{\frac{4}{3} π} \cdot 16$

Divide $r^{3}$ by $1$ .

$r^{3} = \frac{1}{\frac{4}{3} π} \cdot 16$

Simplify the right side.

Simplify $\frac{1}{\frac{4}{3} π} \cdot 16$ .

Combine $\frac{4}{3}$ and $π$ .

$r^{3} = \frac{1}{\frac{4 π}{3}} \cdot 16$

Multiply the numerator by the reciprocal of the denominator.

$r^{3} = 1 \frac{3}{4 π} \cdot 16$

Multiply $\frac{3}{4 π}$ by $1$ .

$r^{3} = \frac{3}{4 π} \cdot 16$

Cancel the common factor of $4$ .

Factor $4$ out of $4 π$ .

$r^{3} = \frac{3}{4 (π)} \cdot 16$

Factor $4$ out of $16$ .

$r^{3} = \frac{3}{4 (π)} \cdot (4 (4))$

Cancel the common factor.

$r^{3} = \frac{3}{4 π} \cdot (4 \cdot 4)$

Rewrite the expression.

$r^{3} = \frac{3}{π} \cdot 4$

Combine $\frac{3}{π}$ and $4$ .

$r^{3} = \frac{3 \cdot 4}{π}$

Multiply $3$ by $4$ .

$r^{3} = \frac{12}{π}$

Take the cube root of both sides of the equation to eliminate the exponent on the left side.

$r = \sqrt[3]{\frac{12}{π}}$

Simplify $\sqrt[3]{\frac{12}{π}}$ .

Rewrite $\sqrt[3]{\frac{12}{π}}$ as $\frac{\sqrt[3]{12}}{\sqrt[3]{π}}$ .

$r = \frac{\sqrt[3]{12}}{\sqrt[3]{π}}$

Multiply $\frac{\sqrt[3]{12}}{\sqrt[3]{π}}$ by $\frac{{\sqrt[3]{π}}^{2}}{{\sqrt[3]{π}}^{2}}$ .

$r = \frac{\sqrt[3]{12}}{\sqrt[3]{π}} \cdot \frac{{\sqrt[3]{π}}^{2}}{{\sqrt[3]{π}}^{2}}$

Combine and simplify the denominator.

Multiply $\frac{\sqrt[3]{12}}{\sqrt[3]{π}}$ by $\frac{{\sqrt[3]{π}}^{2}}{{\sqrt[3]{π}}^{2}}$ .

$r = \frac{\sqrt[3]{12} {\sqrt[3]{π}}^{2}}{\sqrt[3]{π} {\sqrt[3]{π}}^{2}}$

Raise $\sqrt[3]{π}$ to the power of $1$ .

$r = \frac{\sqrt[3]{12} {\sqrt[3]{π}}^{2}}{{\sqrt[3]{π}}^{1} {\sqrt[3]{π}}^{2}}$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$r = \frac{\sqrt[3]{12} {\sqrt[3]{π}}^{2}}{{\sqrt[3]{π}}^{1 + 2}}$

Add $1$ and $2$ .

$r = \frac{\sqrt[3]{12} {\sqrt[3]{π}}^{2}}{{\sqrt[3]{π}}^{3}}$

Rewrite ${\sqrt[3]{π}}^{3}$ as $π$ .

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[3]{π}$ as $π^{\frac{1}{3}}$ .

$r = \frac{\sqrt[3]{12} {\sqrt[3]{π}}^{2}}{{(π^{\frac{1}{3}})}^{3}}$

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$r = \frac{\sqrt[3]{12} {\sqrt[3]{π}}^{2}}{π^{\frac{1}{3} \cdot 3}}$

Combine $\frac{1}{3}$ and $3$ .

$r = \frac{\sqrt[3]{12} {\sqrt[3]{π}}^{2}}{π^{\frac{3}{3}}}$

Cancel the common factor of $3$ .

Cancel the common factor.

$r = \frac{\sqrt[3]{12} {\sqrt[3]{π}}^{2}}{π^{\frac{3}{3}}}$

Rewrite the expression.

$r = \frac{\sqrt[3]{12} {\sqrt[3]{π}}^{2}}{π^{1}}$

Simplify.

$r = \frac{\sqrt[3]{12} {\sqrt[3]{π}}^{2}}{π}$

Rewrite ${\sqrt[3]{π}}^{2}$ as ${(π^{2})}^{\frac{1}{3}}$ .

$r = \frac{\sqrt[3]{12} \sqrt[3]{π^{2}}}{π}$

Combine using the product rule for radicals.

$r = \frac{\sqrt[3]{12 π^{2}}}{π}$

The result can be shown in multiple forms.

Exact Form:

$r = \frac{\sqrt[3]{12 π^{2}}}{π}$

Decimal Form:

$r = 1.56318528 \dots$

Solve for r 16=4/3pir^3

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