No. 28 pakai cara kerja yang lain gak usah (♡˙︶˙♡)
JWB:
28.V.tabung=πr²t
=314/100 x 50 x 50 x 120
=942.000cm³
=942 liter (A)
29.(C)
30.(A)
31.rata²=(20×2)+(23×3)+(25×2)+(26×2)+(30×1)/10
=40+69+50+52+30/10
=241/10
=24,1(B)
No. 28 pakai cara kerja yang lain gak usah (♡˙︶˙♡)
JWB:
28.V.tabung=πr²t
=314/100 x 50 x 50 x 120
=942.000cm³
=942 liter (A)
29.(C)
30.(A)
31.rata²=(20×2)+(23×3)+(25×2)+(26×2)+(30×1)/10
=40+69+50+52+30/10
=241/10
=24,1(B)