Two sides of a triangle have measures of 6 inches and 12 inches. which measure could be the length of the third side?

Whats the name of the vertical axis

(! ) three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder

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?