Materi : Bangun Ruang Sisi Lengkung
t² = s² - r²
t² = 29² - 21²
t² = 400
t = √400
t = 20 cm
V = ⅓ × π × r² × t
V = ⅓ × 22/7 × 21 cm × 21 cm × 20 cm
V = 22 × 21 cm² × 20 cm
V = 462 cm² × 20 cm
V = 9.240 cm³
Lp = πr² + πrs
Lp = 22/7 × 21 × 21 + 22/7 × 21 × 29
Lp = 22 × 63 cm² + 22 × 3 × 29
Lp = 22 × 63 cm² + 22 × 87 cm²
Lp = 22 × 150 cm²
Lp = 3.300 cm²
Semoga bisa membantu
[tex] \boxed{ \colorbox{navy}{ \sf{ \color{lightblue}{ Answer\:by\: BLUEBRAXGEOMETRY}}}} [/tex]
Jawaban:
V = 9240 cm³
LP = 3300 cm²
Penjelasan dengan langkah-langkah:
V =1/3 × πr²t
LP = πr(r + s)
t = √(s² - r²)
..
t = √(29² - 21²)
t = √(841 - 441)
V = 1/3 × 22/7 × 21² × 20
V = 1/3 × 1386 × 20
V = 1/3 × 27720
LP = 22/7 × 21(21 + 29)
LP = 22/7 × 21(50)
LP = 22/7 × 1050
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at}}[/tex]
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
Materi : Bangun Ruang Sisi Lengkung
Tinggi Kerucut
t² = s² - r²
t² = 29² - 21²
t² = 400
t = √400
t = 20 cm
Volume Kerucut
V = ⅓ × π × r² × t
V = ⅓ × 22/7 × 21 cm × 21 cm × 20 cm
V = 22 × 21 cm² × 20 cm
V = 462 cm² × 20 cm
V = 9.240 cm³
Luas Permukaan
Lp = πr² + πrs
Lp = 22/7 × 21 × 21 + 22/7 × 21 × 29
Lp = 22 × 63 cm² + 22 × 3 × 29
Lp = 22 × 63 cm² + 22 × 87 cm²
Lp = 22 × 150 cm²
Lp = 3.300 cm²
Semoga bisa membantu
[tex] \boxed{ \colorbox{navy}{ \sf{ \color{lightblue}{ Answer\:by\: BLUEBRAXGEOMETRY}}}} [/tex]
Jawaban:
V = 9240 cm³
LP = 3300 cm²
Penjelasan dengan langkah-langkah:
V =1/3 × πr²t
LP = πr(r + s)
t = √(s² - r²)
..
t = √(29² - 21²)
t = √(841 - 441)
t = √400
t = 20 cm
..
V = 1/3 × 22/7 × 21² × 20
V = 1/3 × 1386 × 20
V = 1/3 × 27720
V = 9240 cm³
..
LP = 22/7 × 21(21 + 29)
LP = 22/7 × 21(50)
LP = 22/7 × 1050
LP = 3300 cm²
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at}}[/tex]