4. A calculator can perform a single
calculation in about 0.0000034 seconds.
How much time will it take to calculate
4,000 such calculations? Express your
answer in scientific notation.
5. Find the number of seconds in an hour, a
day, a week, a month and a year. Express
your answers in scientific notation.
6. One hectare is equal to 10,000 sq. m.
How much will this be in sq. cm? Express
your answer in scientific notation.
please can some body answer me this questions are very important for me
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