Tolong yahh tuliskan caranya no. 23 sm 28 :)

23.)
= ½ x a x t
= ½ x 32 x24
= 16 x 24
= 384

28.)
= π x r x r x t
= 3,14 x 20 x 20 x 38
=47.728

23.L=a×t/2=32×24/2=32×12=384
28.v=luas lingkaran×tinggi
=3,14×20cm×20cm×38=1.256×38=47.728