get_results using wpdb

I’m trying to retrieve information on my database. I wanted to display all pages using this statement, but I’m getting a blank ARRAY

global $wpdb;
$result = $wpdb->get_results (
        "
        SELECT * 
        FROM  $wpdb->wp_posts 
        WHERE post_type="page"
        "
        );

echo $result; // display data

Output:

  ARRAY

EDIT: After changing below suggestions, I’m now using this. but I still don’t get any results:

global $wpdb;

    $posts = $wpdb->wp_posts;
    $result = $wpdb->get_results( " SELECT * FROM  $posts WHERE 'post_type' =  'page' "  );

    foreach ($result as $page) {
            echo $page->ID.'<br/>';

    }

global $wpdb;

$result = $wpdb->get_results ( "
    SELECT * 
    FROM  $wpdb->posts
        WHERE post_type="page"
" );

foreach ( $result as $page )
{
   echo $page->ID.'<br/>';
   echo $page->post_title.'<br/>';
}