The price of a book is $6.00 and the sales tax is 5%. what is the total cost of the book plus tax?

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

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