Please help me only on 11-24 please

In the diagram below what is the approximate length of the minor arc ab

11. a particular type of cell doubles in number every hour. which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells? a. n = 4 ()" b. n = 4(2)" c. n = 4 + (2)" din = 4 +"

Use this graph to find the cost of 6 show tickets