Answer :

Given,


Weight of 1 cm3 cast iron = 21 g


Length of wire = h = 1 m = 100 cm


Internal radius (r1) =


Thickness of metal = 1 cm


So, External radius (r2) = 1.5 + 1 = 2.5 cm


Volume of metal = (External volume – internal volume)


= πr22h – πr12h = πh (r22 – r12) = × 100 (2.5 + 1.5) (2.5 – 1.5)


= × 100 × 4 × 1 cm3


Weight of metal =


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

The question consRS Aggarwal & V Aggarwal - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics