The figure shown was created by placing the vertices of the square on the circle. The length of each side of the square is 6 cm. and the diameter of the circle is 8cm

What is the area of the circle in cm2 ?(Use 3.14 for π) I need help on this I been stuck on it forever

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.