two semicircular rings of linear mass densities 'lemda' and '3lemda' and of radius R each are joining to form a complete ring.the distance of the centre of the mass of complete ring from its geometrical centre is(in terms of R and pi)

two semicircular rings of linear mass densities 'lemda' and '3lemda' a

1.	two semicircular rings of linear mass densities 'lemda' and '3lemda' and of radius R each are joining to form a complete ring.the distance of the centre of the mass of complete ring from its geometrical centre is(in terms of R and pi)
Answer» two semicircular rings of linear mass densities 'lemda' and '3lemda' and of radius R each are joining to form a complete ring.the distance of the centre of the mass of complete ring from its geometrical centre is(in terms of R and pi)