Question

What is 9 in^2 to cm^2 if 1 in^2 = 6.5 cm^2

Answer 1

`\bf \begin{array}{ccllll} in^2&cm^2\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 1&6.5\\ 9&x \end{array}\implies \cfrac{1}{9}=\cfrac{6.5}{x}`

solve for "x"