Problem: Article: If you have a migraine or feel one coming on, shut off all of the lights in the room and close the blinds. Migraines are usually exacerbated by bright light, so limiting the amount of light in the room is the first step towards relieving symptoms. In some cases, you may be able to stop a migraine in its tracks just by making the room dark. Avoid bright screens from your computer, phone, or television. These lights are often worse than overhead lights or natural light when it comes to headaches. If you're at work or school and you can't control the light in the room, throw on a pair of sunglasses. Grab an ice pack, bag of ice, or heat pad and let it rest against your forehead. Leave it against your head for 10-15 minutes before taking a 5-10 minute break. Repeat this process as needed until you feel your symptoms getting better. If you're using an ice pack, wrap it in a dry, clean towel before putting it against your forehead. Find a comfy couch, lean back in a recliner, or lie down in bed. Prop your head up with a comfortable pillow. Find a positions where your back is relaxed. Focus on your breathing and wait for your symptoms to recede. For many people, symptoms will recede after a while if they're lying down in the dark with a hot or cold compress on their forehead. Even if it's really rough right now, just know that the pain will go away soon. It may take a few hours for your pain to recede, or it may only be a few minutes. It really differs from migraine to migraine. Most people have had a migraine at some point in their life. If you need to call off work or cancel an appointment, don't worrypeople will understand what you're going through. While it's not the best solution for everyone, drinking a small caffeinated beverage may provide some quick relief. Brew a fresh cup of coffee or make a cup of tea and sip it slowly over the course of 10-15 minutes. In many cases, a little caffeine will soothe some of the symptoms from a migraine. If you're a tea person, ginger tea may be a particularly good choice for your migraine. If you're actively trying to avoid medications or drugs, take solace in the fact that caffeine is a naturally-occurring substance in tea and coffee. Measure out 18 teaspoon (0.62mL) of ginger power and pour it into 1 cup (240mL) of cold or hot water. Mix the ginger into the water and drink the solution. Ginger has been proven to help treat nausea, and there is some evidence that it will help with migraines as well. Drinking ginger tea may work as well, although most scientific studies have looked at ginger powder as the main way to limit symptoms from migraines. Some studies suggest that the smell of lavender can relieve migraine symptoms. Although it isn't a miracle cure, it may make it easier for your body to relax while experiencing pain, which can reduce your symptoms. Light a lavender incense, diffuse some lavender oil, or light a lavender candle to improve the aroma in your environment. Lavender isn't a replacement for medication or medical advice. It's not like the scent of lavender will automatically cure your headache. For some people, they won't experience any effect at all. The more comfortable your environment is, the more comfortable you will be! Whatever you do to relax at home or at work, do it. Your migraine will be more likely to go away if you treat yourself a little. Mix 1-part peppermint oil extract with 9-parts water or olive oil. Then, use a clean rag to rub a little bit of the peppermint oil solution into your temples. You can apply it to your forehead as well if you'd like. This should provide some immediate relief and make it a little easier to relax. This may not be the best option for you if you're not fond of mint. Never apply undiluted essential oils to your skin. It is more likely to irritate your skin than actually help you feel better.
Summary: Turn all of the lights off and close the blinds to reduce the pain. Put a hot or cold compress on your forehead to relieve tension. Lie down and relax in the dark until the pain recedes. Drink a small coffee or hot tea if you need immediate relief. Mix some ginger into a small cup of water and drink it to curb symptoms. Diffuse some lavender oil or light a lavender candle to relax. Rub some diluted peppermint oil into your temple to soothe your head.

In one sentence, describe what the following article is about: The formula is P=2(w+h){\displaystyle P=2(w+h)}, where P{\displaystyle P} equals the perimeter of the rectangle, w{\displaystyle w} equals the width of the rectangle, and h{\displaystyle h} equals the height of the triangle. If you don't know the length of the width and height of the rectangle, you cannot use this formula. You can also use the formula P=a+b+c+d{\displaystyle P=a+b+c+d}, where each variable is equal to the length of one side of the rectangle. Due to the commutative property, it doesn't matter which measurement you use for the width, and which you use for the height. The width and height are two adjacent sides. If the rectangle is not a square, these to side lengths must be different. For example, if a rectangle has a width of 5 cm and a height of 10 cm, your formula will look like this: P=2(5+10){\displaystyle P=2(5+10)}. Make sure you follow the order of operations and complete the calculation in parentheses before multiplying. The resulting value will give you the perimeter of your rectangle. For example:P=2(5+10){\displaystyle P=2(5+10)}P=2(15){\displaystyle P=2(15)}P=30{\displaystyle P=30}So, the perimeter of the rectangle is 30 cm. In this formula x{\displaystyle x} is equal to the length of one side of the square. A square has 4 equal sides, so to find its perimeter, you only need to multiply the length of one side by 4. For example, if a square has one side that is 3 cm long, to find the perimeter, you would calculate P=4(3)=12{\displaystyle P=4(3)=12}. So, the perimeter is 12 cm. Often you will not be given the length of all sides, or even the length of any side. It still may be possible to find the perimeter of a rectangle. If you know the area of the rectangle, and the length of one side, you can find the perimeter by finding the missing width or height using the area formula. Set up the formula A=wh{\displaystyle A=wh}. Plug in the values you know, then solve for the missing variable. Now you know the length and width, so you can use the perimeter formula. If you know one side length and the length of the diagonal, you can use the Pythagorean Theorem to find the missing side length. Set up the formula a2+b2=c2{\displaystyle a^{2}+b^{2}=c^{2}}. Substitute the length of the diagonal for c{\displaystyle c}, and the side length for a{\displaystyle a}. Solve for b{\displaystyle b}. Now you know the length and width, so you can use the perimeter formula.
Summary:
Set up the formula for the perimeter of a rectangle. Plug the width and height into the formula. Add the length and width, and multiply by 2. Use the formula P=4x{\displaystyle P=4x} to find the perimeter of a square. Find the perimeter given other information.