Shari's class is making team pennants for an upcoming field day. They cut the pennants out of a large sheet of paper in the pattern shown below. The area of the whole pattern is 1600 cm21600 \text{ cm}^21600 cm21600, start text, space, c, m, end text, squared. They need to know the length of the pennant base. How long is the base of each pennant? cm\text{cm}cmstart text, c, m, end text