Question

Find the missing length indicated. Leave your answer in simplest radical form.Please do problem and 16

Answer 1

`\begin{gathered} h=\sqrt[]{(20\sqrt[]{21})^2-(84)^2}_{} \\ h=8\sqrt[]{21} \\ \end{gathered}`
`\begin{gathered} \frac{x}{8\sqrt[]{21}}=\frac{8\sqrt[]{21}}{84} \\ x=\frac{(8\sqrt[]{21})^2}{84} \\ x=(1344)/(84) \\ x=16 \end{gathered}`