Adiagram shows one of the post at the end of manuel driveway it length is 11.5 the breadth is 11.5 and the width is 7.4 what is the volume of the post

Because vol= length x width x height , and assuming that the height is 11.5 because breadth means width but you already have a width then, vol= 11.5 x 7.4 x 11.5, vol = 978.65

978.65(unit)^3 is your answer because to find the volume you need to multiply everything together.