July 25th of Gregorian calendar

Cylinder bottom diameter: 20.7/(3. 14+ 1)= 5 (cm)

Cylinder height: 5*2= 10 (cm)

column

border area/region

:5π* 10 = 157（cm？ )

Two cylinders

Jianping

:(5/2)? *π*2=39.25 (cm? )

Cylindrical surface area:157+39.25 =196.25 (cm? )