Is the square root of 2 rational

In the surface area formula for cylinders which expressionrepresents the lateral area

G(x) = 2 sin(2x - π) + 4. using complete sentences, explain how to find the minimum value for the function.

Shryia read a 481 -page-long book cover to cover in a single session, at a constant rate. after reading for 1.5 hours, she had 403 pages left to read. how fast was shryia reading? pages per hour how long did it take her to read the entire book? hours plz i realy need this