Tutor profile: Joshua G.
Subject: Basic Math
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.
Subject: English as a Second Language
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.
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