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If we are rounding to the nearest cent, we first locate that value. In this case, it is the second 8 to the right of the decimal. Next, we look at the number immediately to the right. In this case, it is the 4. Since this is 4 or less, we take this number and all numbers to the right to 0 and end up with 5.88.
If the 4 was a 5, the number is 5 or greater, so we have to round up by adding 1 to the cents column. In this case, it would be 5.89.
to work out area of a circle you must use area = pi x R^2
Area = pi x Radius squared
Area = 22/7 x 2^2
Area = 88/7
Area = 12.571 metres squared (M with a little 2 next to right corner of M)
pi is 22/7= 3.1428571429 (rounded up) just use 22/7
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