tolong dijawab yaaaa

d= 10 cm
r= 5cm
t= 12cm-5cm= 7 cm
a. L tabung tanpa alas = πr²+2πrt
                                    = 3,14·5²+2·3.14·5·7
                                   =298,3 cm²
    L 1/2 bola=2πr²
                   = 2·3,14·5²
                   =157 cm²
L total= 455,3 cm²

b. volume tabung=πr²t
                            =3,14·5²·7
                           =549,5 cm³
   volume 1/2 bola=1/2(4/3πr²)
                            =1/2(4/3·3,14·5²)
                            =52,33 cm³
volume total=601,83 cm³