a. tinggi tabung
b. luas selimut tabung
Penyelesaian:
Lp=3.080cm²
d=14cm
r=7cm
----------------------------------------
Lp=2Πr(r+t)
3.080=2×22/7×7(7+t)
3.080=2×22(7+t)
3.080=44(7+t)
3.080=308+44t
3.080-308=44t
2.772=44t
t=63cm
----------------------------------------
Luas selimut:
Ls=2Πrt
Ls=2×22/7×7×63
Ls=2×22×63
Ls=2.772cm²
----------------------------------------
[tex] \boxed{ \colorbox{black}{ \sf{ \color{lightgreen}{ answered\:by\:Duone}}}} [/tex]
Materi : Bangun Ruang dan Volume
Bagian A
Tinggi ( dalam Lp Tabung )
Lp = 2 × π × r² + π × d × t
3.080 cm² = 2.22/7.7² + 22/7.14.t
3.080 cm² = 308 cm² + 44t
44t = 3.080 cm² - 308 cm²
44t = 2.772 cm²
( t = 63 cm )
Bagian B
Luas Selimut Tabung
L = π × d × t
L = 22/7 × 14 cm × 63 cm
L = 22 × 2 cm × 63 cm
L = 44 cm × 63 cm
L = ( 630 × 4 ) + ( 63 × 4 )
L = 2.520 cm² + 252 cm²
{ L = 2.772 cm² }
Semoga bisa membantu
[tex] \boxed{ \colorbox{lightblue}{ \sf{ \color{blue}{ Answer By\:BlueBraxGeometry}}}} [/tex]
