A​ painting, including the​ frame, measures 55cm by 52cm.

​a) How many centimeters of framing were needed to frame the​ painting?
​b) How many millimeters of framing were needed to frame the​ painting?

​a) ____cm were needed to frame the painting.
​(Simplify your answer. Type an integer or a​ decimal.)

​b) ____cm were needed to frame the painting.
​(Simplify your answer. Type an integer or a​ decimal.)