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Question; What is the value of x?

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p. mc) knowing that it is going to rain tomorrow, and going to bed before 9 p. md) knowing that you have a test in school tomorrow, and studying thw night before

What is the period of the sinusoidal function ?