Which expression represents the cost of the mulch based on the radius of the circle?

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

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

Choose the more precise measurement. 26.4 cm or 8.39 cm