Tolong dijwab soalnya besok di kumpulkan solnya tentang luas permukaan kerucut
MahendraPutra1
A) dik : r = 7 dm s = 11 dm dit : Lp kerucut = ...? jawab Luas permukaan kerucut = πr(r+s) = 22/7 × 7 ( 7 + 11 ) = 22 ( 18 ) = 396 dm2
b) dik : d = 15cm, r = 7,5 cm s = 20 cm dit : Lp kerucut = ...? jawab Luas permukaan kerucut = πr(r+s) = 3,14 × 7,5 ( 7,5 + 20 ) = 23,55 ( 27,5 ) = 647,625 cm2
c) dik : r = 8,5 cm s = 160mm, s = 16 cm dit : Lp kerucut = ...? jawab Luas permukaan kerucut = πr(r+s) = 3,14 × 8,5 ( 8,5 + 16 ) = 26,69 ( 24,5 ) = 653,905 cm2
dik :
r = 7 dm
s = 11 dm
dit : Lp kerucut = ...?
jawab
Luas permukaan kerucut
= πr(r+s)
= 22/7 × 7 ( 7 + 11 )
= 22 ( 18 )
= 396 dm2
b)
dik :
d = 15cm, r = 7,5 cm
s = 20 cm
dit : Lp kerucut = ...?
jawab
Luas permukaan kerucut
= πr(r+s)
= 3,14 × 7,5 ( 7,5 + 20 )
= 23,55 ( 27,5 )
= 647,625 cm2
c)
dik :
r = 8,5 cm
s = 160mm, s = 16 cm
dit : Lp kerucut = ...?
jawab
Luas permukaan kerucut
= πr(r+s)
= 3,14 × 8,5 ( 8,5 + 16 )
= 26,69 ( 24,5 )
= 653,905 cm2