How do I calculate the area of a circle?
Circles can be hard to work out but when you get the concept they are easy! First we need to know what pi is, pi is a infinite number that helps us understand geometry with circles. The two basic uses are working out the area and circumference of a circle. pi is 3.14 (the numbers after the decimal point go on forever but for this method two decimal places is all we need.) To work out the area the calculation is - pi (3.14) x radius x radius So if the radius is 3cm the calculation would look like this: 3.14 x 3cm x 3cm = 28.26cm squared. For the circumference we need to do this calculation: pi (3.14) x diameter. Using the radius from the circle above we can work out the diameter. The diameter is twice the radius so 3cm x 2 = 6cm. Then we can calculate the circumference 3.14 x 6cm = 18.84cm.
There are lots of words in the English language that are confusing to spell, how could you remember some of the more difficult ones?
An easy example is the following: necessary - 1 coffee (c) and 2 sugars (ss)
What is the appropriate way to use a semi colon in a list?
The use of semi colons can sometimes be confusing but the best way to use them in a list is when your list of items contains commas. For example: For breakfast I ate a bacon, egg and sausage sandwich; a croissant and a muffin. When we go to the cafe you can choose tea, coffee or hot chocolate; ham, cheese or turkey sandwich; white or brown toast.