A block of wood has the shape of a triangular prism. the bases are right triangle. find its surface area

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).