 
 <translate> In one round trip, traveling to and from the building materials location, one bird covers 2 * 200 = 400 miles. If in one round trip one bird covers 400 miles, in 10 round trips, it covers 400 * 10 = 4000 miles. Since there were two birds collecting the materials, they covered a combined 4000 + 4000 = 8000 miles collecting the building materials in 10 round trips. So the final answer is 8000. <ibo> N'otu njem, na-aga ma na-alọta n'ebe a na-ere ihe ndị e ji ewu ụlọ, otu nnụnụ na-aga kilomita 2 * 200 = 400. Ọ bụrụ na n'otu njem, otu nnụnụ na-aga ma na-alọta kilomita 400, na njem iri, ọ na-aga ma na-alọta, ya bụ, 400 * 10 = kilomita 4,000. Ebe ọ bụ na e nwere nnụnụ abụọ na-achịkọta ihe ndị ahụ, ha jikọtara 4000 + 4000 = 8000 kilomita na-achịkọta ihe ndị e ji ewu ụlọ na njem 10 na-agagharị. Ya mere, azịza ikpeazụ bụ 8000. 