Question

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

Answer 1

$Length = 1 m = 100 cm</p><p></p><p>Inner diameter = 12 cm</p><p></p><p>Radius = 6 cm</p><p></p><p>Now, inner volume</p><p></p><p>Thickness = 1 cm</p><p></p><p>Total radius = 7 cm</p><p></p><p></p><p></p><p>Now, we have the following:</p><p></p><p>Total volume</p><p></p><p>Volume of the tube </p><p></p><p>Density of the tube = 7.7 g/cm3</p><p></p><p>∴ Weight of the tube </p><p>$