3.14*5*8+2*3.14*[(52)*(5/2)]
=3.14*5*8+2*3.14*[2.5*2.5]
=15.7*8+6.28*[2.5*2.5]
=125.6+6.28*6.25
=125.6+39.25
=164.85(平方厘米)