Find the circumference of each circle. Use 3.14 or 22 for T. Round to the nearest tenth if necessary. ​

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 +"

Ineed me i stuck and i don’t want to get it wrong

Can you me find the missing length. i attached an image.