Kak Tolong Jawab Please Buat Besok no 19&20

no 20.
π×r²×t
=3,14×20×20×75
=1256×75
=94.200 cm³
yang A

no.19
=1/2×a×b×t
=1/2×18×14×48
= 6048 cm³
yg c

20. V = luas lingkaran x tinggi
    = 314/100.20.20 x 75 = 1256 x 75 = 94.200 (A)

19. V = La x tinggi
    = 18.14/2 x 48 = 6.048 (C)