Найти объем тела, полученного вращением фигуры, ограниченной
данными линиями вокруг координатной оси.

In the caucasus, there is a picturesque place to live wise , hardworking and hospitable people . this is my country - the republic of adygea . when i look at the age-old mountains , i see the heroic past of their people. after all, the result of the caucasian war, millions of my countrymen are living in a strange land . i am very pleased that many of them return to their homeland , and with some peers i druzhu.v my stories of the mysterious land of plenty , such as dolmens . this small houses, where according to legend lived before dwarfs . dolmens have a special energy and can even heal the sick lyudey.za recent years, adygea , new beautiful buildings : museums , galleries , libraries, and a mosque. sometimes it seems that the air here is what - what is special - clean and prozrachnyy.v republic there are forests and fields.forest green , yellow fields , the mountains of the far dark blue .the capital of adygea maykop.respublika rich in rivers : white , kuban , pshish , laba oshten , as there villages : takhtamukay , kozet , ponezhukay.ya love my country and i am proud that i was born in adygea .