10.1 million in scientific notation? and 110,000 in scientific notation? ?

What is the circumference of a circle with an area of 50.24 cm²?

Pls the last one and it has to be like number 6

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.