What number represents the same amount as 1 hundred+5 tens +12 ones

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

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73