hitunglah volume benda berikut!

A) d = 8 cm = R = 4 cm
     t = 15 cm
   
V = πR²t
V = (3,14)(4²)(15) = 753,6 cm³

B) d = 21 cm = R = 10,5 cm
     t = 40 cm

V =  (1/2)(πR²t)
   = (1/2)(22/7)(10,5²)(40)
   = 6.930 cm³