Asked by aman

Find the weight of led pipe is 3.5 m long if the external diameter of pipe is 2.4 cm and the thickness of led is 2mm and 1cm cube of the leg width is 4g

Answers

Answered by Steve
that's "lead" not led.

The area of a disc of diameter d is pi/4 d^2.

So, the area of the lead cross-section is

pi/4 (2.4^2 - 2.2^2) = 0.723 cm^2

So, the mass of the lead is volume * density, or

0.723cm^2 * 350cm * 4g/cm^3 = 1012.2g
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