title: Convert character vector of height in inches to cm?
body: <p>I am given a character vector:</p>
  
  <pre><code>tibble(H = c("6'2\"", "5'10\"", "5'5\"", "5'1\"", "5'5\"", "5'4\""))
  </code></pre>
  
  <p>and I want to convert it to be in cm.</p>
  
  <p>Please advise how can I do this?</p>