An original piece of artwork is 3my feet by 2.5 feet. A reprint of an artwork is 6 inches by 5 inches. Are the pieces similar? If so, what is the ratio of there corresponding side lengths?

An original piece of artwork is 3my feet by 2.5 feet. A reprint of an artwork is 6 inches by 5 inches. Are the pieces similar? If so, what is the ratio of there corresponding side lengths?