Question

sebuah pipa berongga dengan diameter masing masing 10 cm dan 18 cm serta tinggi 35 cm tentukan volum pipa tersebut
Btw mampir dong yg di poto
pake cara!​

Answer 1

Verified answer

Materi : Kesebangunan dan Kekonggruenan , Bangun Ruang Sisi Lengkung

Gambar yang Terlampirkan

Tinggi Kerucut yang terpotong

a¹ = ( x + 35 ) , b¹ = 9

a² = x , b² = 5

________________/

a¹/a² = b¹/b²

( x + 35 )/x = 9/5

5( x + 35 ) = 9x

5x + 175 = 9x

9x - 5x = 175

4x = 175

x = 175/4 cm = 43,75 cm

x + 35 = 78,75

Langsung Saja

V = ⅓πr²t - ⅓πr²t

V = ⅓.π.9².78,75 - ⅓.π.5².43,75

V = ⅓.π.81.78,75 - ⅓.π.25.43,75

V = ⅓.π × 6.378,75 cm³ - ⅓.π × 1.093,75 cm³

V = ⅓.π × 5.285 cm³

V = ⅓ × 22 × 755 cm³

V = ⅓ × 16.610 cm³

V = 5.536⅔ cm³

Semoga bisa membantu

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Answer 2

x/(x + 35) = 9/5

5(x + 35) = 9(x)

5(x) + 5(35) = 9x

5x + 175 = 9x

9x = 5x + 175

(9 - 5)x = 175

4x = 175

x = 175/4

x = 43,75 + 35

x = 78,75

MAKA :

V = 1/3(π(81(78,75) - 1/3(π(25(43,75)

= 1/3(π(6.378,75) - 1/3(π(1.093,75)

= 1/3(22/7(6.378,75 - 1.093,75)

= 1/3(22/7(5.285)

= 1/3(22(5.285/7)

= 1/3(22(755)

= 1/3(16.610)

= 16.610/3

= 5.536,667 CM³