Luas selimut suatu tabung 660cm² dan tingginya 15cm. volume tabung tersebut untuk Π = 22/7 adalah a. 1.310cm³ b. 2.310cm³ c. 9.240cm³ d. 16.170cm³
lalaajuln2
S. tabung : 660 = 2phi×r×t 660 = 2×22/7×r×15 660 = 94,28 cm × r r = 660 : 94.28 = 7.0 cm v. tbng : phi×r²×t 22/7 × 7 ×7 ×15 = 2310 cm (c) good luck! ^-^
660 = 2phi×r×t
660 = 2×22/7×r×15
660 = 94,28 cm × r
r = 660 : 94.28
= 7.0 cm
v. tbng :
phi×r²×t
22/7 × 7 ×7 ×15
= 2310 cm (c)
good luck! ^-^