Article: Even though you already know the area of the rectangle in this problem, you will still need to use the area formula to find missing information.  The area of a rectangle is a measurement of the two-dimensional space within the rectangle, or the number of square units within the rectangle.  The formula used to find the area of a rectangle is A = l * w. The formula used to find the perimeter of a rectangle is P = 2 * (l + w)  In the above formulas, A stands for “area,” P stands for “perimeter,” l refers to the length of the rectangle, and w refers to the width of the rectangle. This will allow you to find the measurement of the missing side of your rectangle, whether it is the length or the width. Finding this missing piece of information will then allow you to calculate perimeter.  Because you multiply the length and width together to find the area, dividing the area by the width will give you the length. Likewise, dividing the area by the length will give you the width. For example, A = 112 centimeter (44.1 in) squared, l = 14 centimeter (5.5 in)  A = l * w 112 = 14 * w 112/14 = w 8 = w Now that you have measurements for both the length and width, you can plug them into the formula for rectangular perimeter.  In this problem, you add length and width together first because this part of the equation occurs in parentheses. According to the order of operations, you always do the part of the equation in parentheses first. Once you’ve added the length and width of your rectangle together, you can find its perimeter by multiplying by two. This takes into account the additional two sides of your rectangle.  You are able to find the perimeter of the rectangle by adding length and width and multiplying by two because the opposite sides of a rectangle are equal in length. Both lengths of the rectangle are the same, and both widths are the same. For example, P = 2 * (14 + 8) = 2 * (22) = 44 centimeter (17.3 in).
Question: What is a summary of what this article is about?
Write down the formula for area and the formula for the perimeter of a rectangle. Divide the total area by the side measurement you know. Add the length and width. Multiply the sum of the length and width by two.
Article: Go to https://www.youtube.com/. This will open your YouTube home page if you're already logged in. If you aren't already logged in, click SIGN IN in the top-right corner of the window, then enter your email address and password. It's at the top of the YouTube page. Type in a video's name, then press ↵ Enter. This will search YouTube for videos matching your search query. Click a video that you want to add to your playlist. The video will begin to play. It's the + icon below the bottom-right corner of the video window. A drop-down menu will appear. This option is at the bottom of the drop-down menu. A form for your new playlist will open in the drop-down menu. Click the "Name" text field, then type in your playlist's name. Click the "Privacy" drop-down box, then click one of the following:   Public - Anyone who visits your channel can view this playlist.  Unlisted - Your playlist won't appear on your channel, but you can send a link to the playlist to other people in order to share it with them.  Private - Only you can view the playlist. It's a red button in the bottom-right corner of the menu. This will create your playlist and save it to your profile. Go to another video and click the "Add to" icon below it, then check the box to the left of your playlist's name. This will add the video to your playlist.
Question: What is a summary of what this article is about?
Open the YouTube site. Click the search bar. Search for a video. Select a video. Click the "Add to" button. Click Create new playlist. Enter a name for your playlist. Determine your playlist's privacy settings. Click CREATE. Add more videos to the playlist.
Article: The base of the capo is the part that makes contact with the strings on your guitar. You have a few options for the base depending on what office supplies you have lying around. You can use a highlighter, pen, marker, or pencil.  The important thing to consider about the base of your capo is that it is long enough to cover the width of the fretboard. If you have a short pencil or another shorter base, test it by comparing its length to the width of the fretboard. You also have a few options with connecting the base of the capo to the guitar. The important part about the tying component is that it has enough pressure to hold the strings. You can either use a strong elastic band like a hair tie or rubber band, or you can use a piece of string.  If you use an elastic band, test it to make sure it is strong enough to hold the base against the strings. Test the elastic band by stretching the band. You don’t need to stretch it too far, but make sure it doesn’t break on an initial test. Tune up your guitar before attaching the capo. You can either tune to standard tuning (EADGBE) or tune to an alternative tuning. Use a chromatic tuner for the most effective tuning.
Question: What is a summary of what this article is about?
Get the base. Find a tying device. Set up your guitar.