Write 5,000,039 in scientific notation.
0.539 x 10-7
5.39 x 10-6
5.39 x 106
0.539 x 107

Scientific notation is another way to express long numbers. From the given number 5,000,039, its equivalent scientific notation would be equal to 5.000039 x 10^6. The technique here is to count the number of decimal places from the decimal point to the left or to the right. Make sure that the whole number should be only in ones place. Counting to right represents positive exponent, otherwise negative exponent.

The answer is "a"radius = 12.7 unitsdiameter = radius × 212.7 units × 2 = 25.4 units