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Chapter 21- Solids | Exercise 21(A)

Question 9

A hollow square-shaped tube open at both ends is made of iron. The internal square is 5 cm side and the length of the tube is 8 cm. There are 192 cm3 of iron in this tube. Find its thickness.

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Given that the volume of the iron in the tube 192 cm3

Let the thickness of the tube = x cm

Side of the external square = (5 + 2x) cm

The external volume of the tube - its internal volume= volume of iron in the tube

According to the question,

Then, the thickness is 1 cm.

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Our top 5% students will be awarded a special scholarship to Lido.

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Question 9

A hollow square-shaped tube open at both ends is made of iron. The internal square is 5 cm side and the length of the tube is 8 cm. There are 192 cm3 of iron in this tube. Find its thickness.

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

Given that the volume of the iron in the tube 192 cm3

Let the thickness of the tube = x cm

Side of the external square = (5 + 2x) cm

The external volume of the tube - its internal volume= volume of iron in the tube

According to the question,

Then, the thickness is 1 cm.

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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