Sebuah tabung dengan DM 14 cm tinggi 20 cm luas permukaan tabung ...
A 594cm ²
B 748cm ²
C 1034cm²
D 1188cm ²![]()
A 594cm ²
B 748cm ²
C 1034cm²
D 1188cm ²
Diketahui :
diameter (d) = 14 cm
jari² (r) = 14 ÷ 2 = 7 cm
tinggi (t) = 20 cm
Ditanya :
luas permukaan ... ?
Jawaban :
Lp = 2ㅠr²t
= 2 × 22/7 × 7² × 20
= 6.160 cm²
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