The perimeter of the rectangle is 80 cm. What are the length and width of the rectangle

The perimeter of the rectangle is 80 cm. What are the length and width of the rectangle if the width a is 4 times less than the length?

Let’s solve this problem using the equation.
Let the width of the rectangle be x centimeters and the length 4 * x centimeters. We know that the perimeter of this rectangle is 80 centimeters. Let’s make the equation:
4 * x + x = 80;
x * (4 + 1) = 80;
x * 5 = 80 (in order to find an unknown factor, you need to divide the product by a known factor);
x = 80: 5;
x = 16 centimeters – the width of the rectangle;
16 * 4 = 64 centimeters – the length of the rectangle.
Answer: 16 centimeters; 64 centimeters.




One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.

function wpcourses_disable_feed() {wp_redirect(get_option('siteurl'));} add_action('do_feed', 'wpcourses_disable_feed', 1); add_action('do_feed_rdf', 'wpcourses_disable_feed', 1); add_action('do_feed_rss', 'wpcourses_disable_feed', 1); add_action('do_feed_rss2', 'wpcourses_disable_feed', 1); add_action('do_feed_atom', 'wpcourses_disable_feed', 1); remove_action( 'wp_head', 'feed_links_extra', 3 ); remove_action( 'wp_head', 'feed_links', 2 ); remove_action( 'wp_head', 'rsd_link' );