Elementary Geometry for College Students (5th Edition)

= 360 $\pi$ $cm^{2}$ $\approx$ 1131 $cm^{2}$
Lateral area = 2 $\times$ $\pi$ $\times$ r $\times$ h Lateral area = 2 $\times$ $\pi$ $\times$ 12 cm $\times$ 15 cm Lateral area = 360 $\pi$ $cm^{2}$ $\approx$ 1131 $cm^{2}$