Respuesta :

Using the formulasA=πrl+πr2l=r2+h2Solving forAA=πr(r+h2+r2)=π·5·(5+122+52)≈282.74334
H =12
R=5
l*l=h*h+r*r
l*l=12*12+5*5
l*l=144+25
l=square root of (169)
l=13

SA=3.14*5*(5+13) = 282.6