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How Much Iron is Needed to Make a Rod of Length 90 Cm and Diameter 1.4 Cm? - SSC (English Medium) Class 8 - Mathematics

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Question

How much iron is needed to make a rod of length 90 cm and diameter 1.4 cm?

Solution

Total length = 90 cm
Diameter = 1.4 cm
Radius = 0.7 cm
Total iron required = Volume of cylinder 

= πr²h = `22/7 xx 0.7 xx 0.7 xx 90` = 138.6 cm³

Thus, 138.6 cmof iron is required.

  Is there an error in this question or solution?

APPEARS IN

 Balbharati Solution for Balbharati Class 8 Mathematics (2019 to Current)
Chapter 16: Surface area and Volume
Practice Set 16.3 | Q: 2 | Page no. 112
Solution How Much Iron is Needed to Make a Rod of Length 90 Cm and Diameter 1.4 Cm? Concept: Volume of a Cylinder.
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