Question

Pls solve this question clearly (preferably on a page),I will mark your answer brainliest if it is clear and correct and pls be careful while answering......

Answer 1

R = RHO *L/A
SO, L=R*A/RHO
A= PIE *RSQUARE
NOW, L= 10*0.0001*0.0001*22/50*10POWER-8
= 10*10POWER-8*22/7*10POWER-8*50 [0.0001*0.0001 = 10power-8]
=10*22/7*50
=22/35
= 0.628 m is length 
    note: u can take pie as per ur wish but in this case 22/7 is better so our calculation became easier