Jud ,ate.hatrdhet ie lÇb2ees

1.	Jud ,ate.hatrdhet ie lÇb2ees
Answer» <p>Synthetic fibers are fibers made by humans with chemical synthesis, as opposed to natural fibers that humans get from living organisms with little or no chemical changes. They are the result of extensive research by scientists to improve on naturally occurring animal fibers and plant fibers.</p> <p>Specialty synthetic fibers include:</p><p>Rayon (1894) artificial silk.</p><p>Vinyon (1939)</p><p>Saran (1941)</p><p>Spandex (1959)</p><p>Vinalon (1939)</p><p>Aramids (1961) - known as Nomex, Kevlar and Twaron.</p><p>Modal (1960's)</p><p>Dyneema/Spectra (1979)</p> <p>on a field 55m long and 22m wide square shaped mattresses have to be spread out.find out the minimum number of same size mattresses that would be need to cover field</p>

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