Math, asked by LyricStevens, 1 year ago

The length of a mettalic tube is 1 metre, its thickness is 1 cm and its inner daimeter is 12 cm. Find the weight of the tube if the density of the metal is 7.7 grams per cubic centimetre​

Answers

Answered by EverytimeLEarnER
0

Answer:

31.46kg

Step-by-step explanation:

volume of tube =π(R^2-r^2)h

22/7(7^2-6^2)100

(2200×13/7)cm^3

density=mass/volume

7.7=m/above volume

and after further calculation you will get answer

Answered by xcristianox
4

inner diameter = 12 cm

Therefore, radius = 6 cm

Thickness = 1 cm

External radius = thickness + inner radius

=1 + 6 = 7 cm.

Length of tube = 1 m = 100 cm

Now, volume of tube = π(R² - r²)h

22/7 * (7² - 6²) * 100

22/7 * 13 * 100 = 4085.71 cm³

Density of metal per cm³ = 7.7 g

Weight of tube = 7.7 g × 4085.71

                         = 31868.538 g

                         = 31.868 kg

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