How would i solve for radius of a sphere if the volume is 523.3

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

What is the shape of the height and weight distribution

Using elimination, what is -4x+2y=-12 4x+8y=-24