dik,mb/jari-jari=......cm ab/diameter=28cm t=45cm la=.....cm? v=......cm?

lp=l selimut+2 l alas
= (phi.d.t)+(2.phi.r.r)
=(22/7.28.45)+(2.22/7.14.14)
=3960+1232
=5912 cm persegi
la=phi.r.r
=22/7.14.14
=616 cm persegi
v = phi.r.r.t
= 22/7.14.14.45
=27720 cm kubik