Jika diketahui luas permukaan tabung 748cm2 dan hati jati alasnya 7,cm maka tinggi tabung adalah
DRAY99
Dik :LSP = r = 7 cm dit :t = jawab => LSP = 2π+ πdt 748 = (98 +14t)π
238 = 98 +14t 140 = 14t t = 10 cm.
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jobe
Luas permukaan tabung = 2 x phi x r x ( r + t ) 748 cm2 = 2 x 22 x 7 x ( 7 + t ) 7 748 cm2 = 44 x ( 7 + t ) 748 = 7 + t 44 17 = 7 + t 17 - 7 = t t = 10 cm Jadi, tinggi tabung = 10 cm
r = 7 cm
dit :t =
jawab => LSP = 2π+ πdt
748 = (98 +14t)π
238 = 98 +14t
140 = 14t
t = 10 cm.
748 cm2 = 2 x 22 x 7 x ( 7 + t )
7
748 cm2 = 44 x ( 7 + t )
748 = 7 + t
44
17 = 7 + t
17 - 7 = t
t = 10 cm
Jadi, tinggi tabung = 10 cm