Jawaban:
a. volume = 1.004,8 cm³
b. volume = 1.232 cm³
Penjelasan dengan langkah-langkah:
a. Jari-jari alas kerucut 8 cm dan panjang garis pelukisnya 17 cm. π = 3,14
jawab :
tinggi = ...?
t² = s² - r²
t² = 17² - 8²
= 289 - 64
t² = √225
t = 15
Volume = 1/3 x π x r² x t
= 1/3 x 3,14 x 8 x 8 x 15
*15 × 1/3 = 5*
= 3,14 x 64 x 5
= 200,96 x 5
volume = 1.004,8 cm³
b. Tinggi kerucut 24 cm dan panjang garis pelukis 25 cm. π = 22/7
r² = s² - t²
= 25² - 24²
r² = 625 - 576
r² = √ 49
r = 7
volume = 1/3 x π x r² x t
= 1/3 x 22/7 x 7 x 7 x 24
*7÷ 7 = 1*
= 24 × 1/3 = 8*
= 22 x 7 x 8
= 154 x 8
volume = 1.232 cm³
Semoga bermanfaat
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Jawaban:
a. volume = 1.004,8 cm³
b. volume = 1.232 cm³
Penjelasan dengan langkah-langkah:
a. Jari-jari alas kerucut 8 cm dan panjang garis pelukisnya 17 cm. π = 3,14
jawab :
tinggi = ...?
t² = s² - r²
t² = 17² - 8²
= 289 - 64
t² = √225
t = 15
Volume = 1/3 x π x r² x t
= 1/3 x 3,14 x 8 x 8 x 15
*15 × 1/3 = 5*
= 3,14 x 64 x 5
= 200,96 x 5
volume = 1.004,8 cm³
b. Tinggi kerucut 24 cm dan panjang garis pelukis 25 cm. π = 22/7
r² = s² - t²
= 25² - 24²
r² = 625 - 576
r² = √ 49
r = 7
volume = 1/3 x π x r² x t
= 1/3 x 22/7 x 7 x 7 x 24
*7÷ 7 = 1*
= 24 × 1/3 = 8*
= 22 x 7 x 8
= 154 x 8
volume = 1.232 cm³
Semoga bermanfaat