Help quick marking brainliest

What is the volume of the pyramid?
(check pic)

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Sum is 17 and their difference is 3

Write the function for the graph. (1.8) (0,4)