a = 42 mm
b = 20 mm
c = 43,71 mm
Array ( [ID] => 2467 [id] => 2467 [title] => compliance-belgian-standard-nbn [filename] => compliance-belgian-standard-nbn.pdf [filesize] => 1315128 [url] => https://laudescher.com/wp-content/uploads/2020/06/compliance-belgian-standard-nbn.pdf [link] => https://laudescher.com/en/documents/compliance-with-belgian-fire-standard-nbn-713-020/compliance-belgian-standard-nbn/ [alt] => [author] => 6 [description] => [caption] => [name] => compliance-belgian-standard-nbn [status] => inherit [uploaded_to] => 2466 [date] => 2020-06-08 09:32:09 [modified] => 2020-06-08 09:32:09 [menu_order] => 0 [mime_type] => application/pdf [type] => application [subtype] => pdf [icon] => https://laudescher.com/wp-includes/images/media/document.png )