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Find the surface area of a cylinder with 50 inches long and a raduis of 2 inches

Me because some of question i don’t understand

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

Use pascal's triangle to find the missing values. x4 - 4xb + 6x2 - ax + 1